Home / 9,370.29-12,920.49-6,387.87

Finding the Fourth Proportional to 9,370.29, 12,920.49 and 6,387.87

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Solution

The fourth proportional to 9,370.29, 12,920.49 and 6,387.87 is: 8,808.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,370.29 : 12,920.49 = 6,387.87 : x
  2. Step 2: Convert to fraction form
    9,370.29/12,920.49 = 6,387.87/x
  3. Step 3: Cross multiply
    9,370.29x = 12,920.49 × 6,387.87
  4. Step 4: Simplify right side
    9,370.29x = 82,534,410.46
  5. Step 5: Solve for x
    x = 82,534,410.46/9,370.29
  6. Step 6: Final answer
    x = 8,808.10

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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.