Home / 8,470.32-12,713.68-4,090.86

Finding the Fourth Proportional to 8,470.32, 12,713.68 and 4,090.86

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Solution

The fourth proportional to 8,470.32, 12,713.68 and 4,090.86 is: 6,140.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,470.32 : 12,713.68 = 4,090.86 : x
  2. Step 2: Convert to fraction form
    8,470.32/12,713.68 = 4,090.86/x
  3. Step 3: Cross multiply
    8,470.32x = 12,713.68 × 4,090.86
  4. Step 4: Simplify right side
    8,470.32x = 52,009,884.96
  5. Step 5: Solve for x
    x = 52,009,884.96/8,470.32
  6. Step 6: Final answer
    x = 6,140.25

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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.