Home / 5,402.10-8,103.15-5,280.60

Finding the Fourth Proportional to 5,402.10, 8,103.15 and 5,280.60

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Solution

The fourth proportional to 5,402.10, 8,103.15 and 5,280.60 is: 7,920.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,402.10 : 8,103.15 = 5,280.60 : x
  2. Step 2: Convert to fraction form
    5,402.10/8,103.15 = 5,280.60/x
  3. Step 3: Cross multiply
    5,402.10x = 8,103.15 × 5,280.60
  4. Step 4: Simplify right side
    5,402.10x = 42,789,493.89
  5. Step 5: Solve for x
    x = 42,789,493.89/5,402.10
  6. Step 6: Final answer
    x = 7,920.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.