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Finding the Fourth Proportional to 6,665.76, 9,995.76 and 2,047.68

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Solution

The fourth proportional to 6,665.76, 9,995.76 and 2,047.68 is: 3,070.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,665.76 : 9,995.76 = 2,047.68 : x
  2. Step 2: Convert to fraction form
    6,665.76/9,995.76 = 2,047.68/x
  3. Step 3: Cross multiply
    6,665.76x = 9,995.76 × 2,047.68
  4. Step 4: Simplify right side
    6,665.76x = 20,468,117.84
  5. Step 5: Solve for x
    x = 20,468,117.84/6,665.76
  6. Step 6: Final answer
    x = 3,070.64

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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.