Home / 5,403.60-8,117.55-5,257.80

Finding the Fourth Proportional to 5,403.60, 8,117.55 and 5,257.80

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Solution

The fourth proportional to 5,403.60, 8,117.55 and 5,257.80 is: 7,898.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,403.60 : 8,117.55 = 5,257.80 : x
  2. Step 2: Convert to fraction form
    5,403.60/8,117.55 = 5,257.80/x
  3. Step 3: Cross multiply
    5,403.60x = 8,117.55 × 5,257.80
  4. Step 4: Simplify right side
    5,403.60x = 42,680,454.39
  5. Step 5: Solve for x
    x = 42,680,454.39/5,403.60
  6. Step 6: Final answer
    x = 7,898.52

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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.