Home / 8,931.31-12,325.10-5,154.43

Finding the Fourth Proportional to 8,931.31, 12,325.10 and 5,154.43

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Solution

The fourth proportional to 8,931.31, 12,325.10 and 5,154.43 is: 7,113.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.31 : 12,325.10 = 5,154.43 : x
  2. Step 2: Convert to fraction form
    8,931.31/12,325.10 = 5,154.43/x
  3. Step 3: Cross multiply
    8,931.31x = 12,325.10 × 5,154.43
  4. Step 4: Simplify right side
    8,931.31x = 63,528,808.61
  5. Step 5: Solve for x
    x = 63,528,808.61/8,931.31
  6. Step 6: Final answer
    x = 7,113.05

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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.