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Finding the Fourth Proportional to 9,312.60, 13,960.80 and 5,610.90

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Solution

The fourth proportional to 9,312.60, 13,960.80 and 5,610.90 is: 8,411.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,312.60 : 13,960.80 = 5,610.90 : x
  2. Step 2: Convert to fraction form
    9,312.60/13,960.80 = 5,610.90/x
  3. Step 3: Cross multiply
    9,312.60x = 13,960.80 × 5,610.90
  4. Step 4: Simplify right side
    9,312.60x = 78,332,652.72
  5. Step 5: Solve for x
    x = 78,332,652.72/9,312.60
  6. Step 6: Final answer
    x = 8,411.47

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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.