Home / 8,393.09-12,586.19-3,128.42

Finding the Fourth Proportional to 8,393.09, 12,586.19 and 3,128.42

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Solution

The fourth proportional to 8,393.09, 12,586.19 and 3,128.42 is: 4,691.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,393.09 : 12,586.19 = 3,128.42 : x
  2. Step 2: Convert to fraction form
    8,393.09/12,586.19 = 3,128.42/x
  3. Step 3: Cross multiply
    8,393.09x = 12,586.19 × 3,128.42
  4. Step 4: Simplify right side
    8,393.09x = 39,374,904.34
  5. Step 5: Solve for x
    x = 39,374,904.34/8,393.09
  6. Step 6: Final answer
    x = 4,691.35

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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.