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Finding the Fourth Proportional to 8,307.76, 12,452.40 and 4,151.28

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Solution

The fourth proportional to 8,307.76, 12,452.40 and 4,151.28 is: 6,222.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,307.76 : 12,452.40 = 4,151.28 : x
  2. Step 2: Convert to fraction form
    8,307.76/12,452.40 = 4,151.28/x
  3. Step 3: Cross multiply
    8,307.76x = 12,452.40 × 4,151.28
  4. Step 4: Simplify right side
    8,307.76x = 51,693,399.07
  5. Step 5: Solve for x
    x = 51,693,399.07/8,307.76
  6. Step 6: Final answer
    x = 6,222.30

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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.