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Finding the Fourth Proportional to 8,374.71, 11,553.39 and 5,389.41

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Solution

The fourth proportional to 8,374.71, 11,553.39 and 5,389.41 is: 7,435.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,374.71 : 11,553.39 = 5,389.41 : x
  2. Step 2: Convert to fraction form
    8,374.71/11,553.39 = 5,389.41/x
  3. Step 3: Cross multiply
    8,374.71x = 11,553.39 × 5,389.41
  4. Step 4: Simplify right side
    8,374.71x = 62,265,955.60
  5. Step 5: Solve for x
    x = 62,265,955.60/8,374.71
  6. Step 6: Final answer
    x = 7,435.00

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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.