Home / 8,437.38-12,655.21-2,815.08

Finding the Fourth Proportional to 8,437.38, 12,655.21 and 2,815.08

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Solution

The fourth proportional to 8,437.38, 12,655.21 and 2,815.08 is: 4,222.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,437.38 : 12,655.21 = 2,815.08 : x
  2. Step 2: Convert to fraction form
    8,437.38/12,655.21 = 2,815.08/x
  3. Step 3: Cross multiply
    8,437.38x = 12,655.21 × 2,815.08
  4. Step 4: Simplify right side
    8,437.38x = 35,625,422.86
  5. Step 5: Solve for x
    x = 35,625,422.86/8,437.38
  6. Step 6: Final answer
    x = 4,222.33

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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.