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Finding the Fourth Proportional to 9,569.76, 13,204.80 and 5,377.20

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Solution

The fourth proportional to 9,569.76, 13,204.80 and 5,377.20 is: 7,419.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,569.76 : 13,204.80 = 5,377.20 : x
  2. Step 2: Convert to fraction form
    9,569.76/13,204.80 = 5,377.20/x
  3. Step 3: Cross multiply
    9,569.76x = 13,204.80 × 5,377.20
  4. Step 4: Simplify right side
    9,569.76x = 71,004,850.56
  5. Step 5: Solve for x
    x = 71,004,850.56/9,569.76
  6. Step 6: Final answer
    x = 7,419.71

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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.