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Finding the Fourth Proportional to 6,628.68, 9,943.02 and 3,165.12

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Solution

The fourth proportional to 6,628.68, 9,943.02 and 3,165.12 is: 4,747.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,628.68 : 9,943.02 = 3,165.12 : x
  2. Step 2: Convert to fraction form
    6,628.68/9,943.02 = 3,165.12/x
  3. Step 3: Cross multiply
    6,628.68x = 9,943.02 × 3,165.12
  4. Step 4: Simplify right side
    6,628.68x = 31,470,851.46
  5. Step 5: Solve for x
    x = 31,470,851.46/6,628.68
  6. Step 6: Final answer
    x = 4,747.68

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Half scale
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Double scale
Find fourth proportional to 6,629.68, 9,944.52 and 3,166.12
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.