Home / 8,719.31-13,081.02-6,947.10

Finding the Fourth Proportional to 8,719.31, 13,081.02 and 6,947.10

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Solution

The fourth proportional to 8,719.31, 13,081.02 and 6,947.10 is: 10,422.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,719.31 : 13,081.02 = 6,947.10 : x
  2. Step 2: Convert to fraction form
    8,719.31/13,081.02 = 6,947.10/x
  3. Step 3: Cross multiply
    8,719.31x = 13,081.02 × 6,947.10
  4. Step 4: Simplify right side
    8,719.31x = 90,875,154.04
  5. Step 5: Solve for x
    x = 90,875,154.04/8,719.31
  6. Step 6: Final answer
    x = 10,422.29

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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.