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Finding the Fourth Proportional to 8,366.80, 12,543.72 and 4,851.40

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Solution

The fourth proportional to 8,366.80, 12,543.72 and 4,851.40 is: 7,273.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,366.80 : 12,543.72 = 4,851.40 : x
  2. Step 2: Convert to fraction form
    8,366.80/12,543.72 = 4,851.40/x
  3. Step 3: Cross multiply
    8,366.80x = 12,543.72 × 4,851.40
  4. Step 4: Simplify right side
    8,366.80x = 60,854,603.21
  5. Step 5: Solve for x
    x = 60,854,603.21/8,366.80
  6. Step 6: Final answer
    x = 7,273.34

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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.