Home / 8,749.42-12,078.66-5,931.70

Finding the Fourth Proportional to 8,749.42, 12,078.66 and 5,931.70

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Solution

The fourth proportional to 8,749.42, 12,078.66 and 5,931.70 is: 8,188.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,749.42 : 12,078.66 = 5,931.70 : x
  2. Step 2: Convert to fraction form
    8,749.42/12,078.66 = 5,931.70/x
  3. Step 3: Cross multiply
    8,749.42x = 12,078.66 × 5,931.70
  4. Step 4: Simplify right side
    8,749.42x = 71,646,987.52
  5. Step 5: Solve for x
    x = 71,646,987.52/8,749.42
  6. Step 6: Final answer
    x = 8,188.77

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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.