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Finding the Fourth Proportional to 6,665.81, 9,977.01 and 4,910.12

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Solution

The fourth proportional to 6,665.81, 9,977.01 and 4,910.12 is: 7,349.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,665.81 : 9,977.01 = 4,910.12 : x
  2. Step 2: Convert to fraction form
    6,665.81/9,977.01 = 4,910.12/x
  3. Step 3: Cross multiply
    6,665.81x = 9,977.01 × 4,910.12
  4. Step 4: Simplify right side
    6,665.81x = 48,988,306.17
  5. Step 5: Solve for x
    x = 48,988,306.17/6,665.81
  6. Step 6: Final answer
    x = 7,349.19

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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.