Home / 5,135.60-7,703.40-2,217.20

Finding the Fourth Proportional to 5,135.60, 7,703.40 and 2,217.20

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Solution

The fourth proportional to 5,135.60, 7,703.40 and 2,217.20 is: 3,325.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.60 : 7,703.40 = 2,217.20 : x
  2. Step 2: Convert to fraction form
    5,135.60/7,703.40 = 2,217.20/x
  3. Step 3: Cross multiply
    5,135.60x = 7,703.40 × 2,217.20
  4. Step 4: Simplify right side
    5,135.60x = 17,079,978.48
  5. Step 5: Solve for x
    x = 17,079,978.48/5,135.60
  6. Step 6: Final answer
    x = 3,325.80

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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.