Home / 8,045.60-11,103.12-5,391.20

Finding the Fourth Proportional to 8,045.60, 11,103.12 and 5,391.20

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Solution

The fourth proportional to 8,045.60, 11,103.12 and 5,391.20 is: 7,439.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,045.60 : 11,103.12 = 5,391.20 : x
  2. Step 2: Convert to fraction form
    8,045.60/11,103.12 = 5,391.20/x
  3. Step 3: Cross multiply
    8,045.60x = 11,103.12 × 5,391.20
  4. Step 4: Simplify right side
    8,045.60x = 59,859,140.54
  5. Step 5: Solve for x
    x = 59,859,140.54/8,045.60
  6. Step 6: Final answer
    x = 7,439.98

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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.