Home / 5,148.18-7,101.54-3,157.20

Finding the Fourth Proportional to 5,148.18, 7,101.54 and 3,157.20

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Solution

The fourth proportional to 5,148.18, 7,101.54 and 3,157.20 is: 4,355.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148.18 : 7,101.54 = 3,157.20 : x
  2. Step 2: Convert to fraction form
    5,148.18/7,101.54 = 3,157.20/x
  3. Step 3: Cross multiply
    5,148.18x = 7,101.54 × 3,157.20
  4. Step 4: Simplify right side
    5,148.18x = 22,420,982.09
  5. Step 5: Solve for x
    x = 22,420,982.09/5,148.18
  6. Step 6: Final answer
    x = 4,355.13

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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.