Home / 5,385.50-7,430.96-3,147.69

Finding the Fourth Proportional to 5,385.50, 7,430.96 and 3,147.69

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Solution

The fourth proportional to 5,385.50, 7,430.96 and 3,147.69 is: 4,343.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,385.50 : 7,430.96 = 3,147.69 : x
  2. Step 2: Convert to fraction form
    5,385.50/7,430.96 = 3,147.69/x
  3. Step 3: Cross multiply
    5,385.50x = 7,430.96 × 3,147.69
  4. Step 4: Simplify right side
    5,385.50x = 23,390,366.35
  5. Step 5: Solve for x
    x = 23,390,366.35/5,385.50
  6. Step 6: Final answer
    x = 4,343.22

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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.