Home / 8,788.38-12,129.40-5,064.54

Finding the Fourth Proportional to 8,788.38, 12,129.40 and 5,064.54

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Solution

The fourth proportional to 8,788.38, 12,129.40 and 5,064.54 is: 6,989.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,788.38 : 12,129.40 = 5,064.54 : x
  2. Step 2: Convert to fraction form
    8,788.38/12,129.40 = 5,064.54/x
  3. Step 3: Cross multiply
    8,788.38x = 12,129.40 × 5,064.54
  4. Step 4: Simplify right side
    8,788.38x = 61,429,831.48
  5. Step 5: Solve for x
    x = 61,429,831.48/8,788.38
  6. Step 6: Final answer
    x = 6,989.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.