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Finding the Fourth Proportional to 8,339.80, 11,503.92 and 5,507.18

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Solution

The fourth proportional to 8,339.80, 11,503.92 and 5,507.18 is: 7,596.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,339.80 : 11,503.92 = 5,507.18 : x
  2. Step 2: Convert to fraction form
    8,339.80/11,503.92 = 5,507.18/x
  3. Step 3: Cross multiply
    8,339.80x = 11,503.92 × 5,507.18
  4. Step 4: Simplify right side
    8,339.80x = 63,354,158.15
  5. Step 5: Solve for x
    x = 63,354,158.15/8,339.80
  6. Step 6: Final answer
    x = 7,596.60

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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.