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Finding the Fourth Proportional to 5,429, 7,488.45 and 4,308.16

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Solution

The fourth proportional to 5,429, 7,488.45 and 4,308.16 is: 5,942.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,429 : 7,488.45 = 4,308.16 : x
  2. Step 2: Convert to fraction form
    5,429/7,488.45 = 4,308.16/x
  3. Step 3: Cross multiply
    5,429x = 7,488.45 × 4,308.16
  4. Step 4: Simplify right side
    5,429x = 32,261,440.75
  5. Step 5: Solve for x
    x = 32,261,440.75/5,429
  6. Step 6: Final answer
    x = 5,942.43

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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.