Home / 8,397.19-12,595.38-3,131.79

Finding the Fourth Proportional to 8,397.19, 12,595.38 and 3,131.79

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Solution

The fourth proportional to 8,397.19, 12,595.38 and 3,131.79 is: 4,697.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,397.19 : 12,595.38 = 3,131.79 : x
  2. Step 2: Convert to fraction form
    8,397.19/12,595.38 = 3,131.79/x
  3. Step 3: Cross multiply
    8,397.19x = 12,595.38 × 3,131.79
  4. Step 4: Simplify right side
    8,397.19x = 39,446,100.96
  5. Step 5: Solve for x
    x = 39,446,100.96/8,397.19
  6. Step 6: Final answer
    x = 4,697.53

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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.