Home / 8,572.15-11,815.45-5,738.55

Finding the Fourth Proportional to 8,572.15, 11,815.45 and 5,738.55

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Solution

The fourth proportional to 8,572.15, 11,815.45 and 5,738.55 is: 7,909.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,572.15 : 11,815.45 = 5,738.55 : x
  2. Step 2: Convert to fraction form
    8,572.15/11,815.45 = 5,738.55/x
  3. Step 3: Cross multiply
    8,572.15x = 11,815.45 × 5,738.55
  4. Step 4: Simplify right side
    8,572.15x = 67,803,550.60
  5. Step 5: Solve for x
    x = 67,803,550.60/8,572.15
  6. Step 6: Final answer
    x = 7,909.75

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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.