Home / 5,390.52-7,438.56-3,000.76

Finding the Fourth Proportional to 5,390.52, 7,438.56 and 3,000.76

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Solution

The fourth proportional to 5,390.52, 7,438.56 and 3,000.76 is: 4,140.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,390.52 : 7,438.56 = 3,000.76 : x
  2. Step 2: Convert to fraction form
    5,390.52/7,438.56 = 3,000.76/x
  3. Step 3: Cross multiply
    5,390.52x = 7,438.56 × 3,000.76
  4. Step 4: Simplify right side
    5,390.52x = 22,321,333.31
  5. Step 5: Solve for x
    x = 22,321,333.31/5,390.52
  6. Step 6: Final answer
    x = 4,140.85

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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.