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Finding the Fourth Proportional to 8,488.80, 12,708.09 and 6,307.20

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Solution

The fourth proportional to 8,488.80, 12,708.09 and 6,307.20 is: 9,442.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,488.80 : 12,708.09 = 6,307.20 : x
  2. Step 2: Convert to fraction form
    8,488.80/12,708.09 = 6,307.20/x
  3. Step 3: Cross multiply
    8,488.80x = 12,708.09 × 6,307.20
  4. Step 4: Simplify right side
    8,488.80x = 80,152,465.25
  5. Step 5: Solve for x
    x = 80,152,465.25/8,488.80
  6. Step 6: Final answer
    x = 9,442.14

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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.