Home / 9,125.40-13,688.10-3,279.90

Finding the Fourth Proportional to 9,125.40, 13,688.10 and 3,279.90

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Solution

The fourth proportional to 9,125.40, 13,688.10 and 3,279.90 is: 4,919.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,125.40 : 13,688.10 = 3,279.90 : x
  2. Step 2: Convert to fraction form
    9,125.40/13,688.10 = 3,279.90/x
  3. Step 3: Cross multiply
    9,125.40x = 13,688.10 × 3,279.90
  4. Step 4: Simplify right side
    9,125.40x = 44,895,599.19
  5. Step 5: Solve for x
    x = 44,895,599.19/9,125.40
  6. Step 6: Final answer
    x = 4,919.85

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1.5x scale

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.