Home / 8,403.09-12,591.78-4,231.45

Finding the Fourth Proportional to 8,403.09, 12,591.78 and 4,231.45

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Solution

The fourth proportional to 8,403.09, 12,591.78 and 4,231.45 is: 6,340.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,403.09 : 12,591.78 = 4,231.45 : x
  2. Step 2: Convert to fraction form
    8,403.09/12,591.78 = 4,231.45/x
  3. Step 3: Cross multiply
    8,403.09x = 12,591.78 × 4,231.45
  4. Step 4: Simplify right side
    8,403.09x = 53,281,487.48
  5. Step 5: Solve for x
    x = 53,281,487.48/8,403.09
  6. Step 6: Final answer
    x = 6,340.70

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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.