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Finding the Fourth Proportional to 6,875.71, 9,489.06 and 3,892.07

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Solution

The fourth proportional to 6,875.71, 9,489.06 and 3,892.07 is: 5,371.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,875.71 : 9,489.06 = 3,892.07 : x
  2. Step 2: Convert to fraction form
    6,875.71/9,489.06 = 3,892.07/x
  3. Step 3: Cross multiply
    6,875.71x = 9,489.06 × 3,892.07
  4. Step 4: Simplify right side
    6,875.71x = 36,932,085.75
  5. Step 5: Solve for x
    x = 36,932,085.75/6,875.71
  6. Step 6: Final answer
    x = 5,371.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.