Home / 5,385.32-7,432.36-3,147.76

Finding the Fourth Proportional to 5,385.32, 7,432.36 and 3,147.76

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Solution

The fourth proportional to 5,385.32, 7,432.36 and 3,147.76 is: 4,344.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,385.32 : 7,432.36 = 3,147.76 : x
  2. Step 2: Convert to fraction form
    5,385.32/7,432.36 = 3,147.76/x
  3. Step 3: Cross multiply
    5,385.32x = 7,432.36 × 3,147.76
  4. Step 4: Simplify right side
    5,385.32x = 23,395,285.51
  5. Step 5: Solve for x
    x = 23,395,285.51/5,385.32
  6. Step 6: Final answer
    x = 4,344.27

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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.