Home / 8,749.16-12,078.12-5,931.38

Finding the Fourth Proportional to 8,749.16, 12,078.12 and 5,931.38

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Solution

The fourth proportional to 8,749.16, 12,078.12 and 5,931.38 is: 8,188.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,749.16 : 12,078.12 = 5,931.38 : x
  2. Step 2: Convert to fraction form
    8,749.16/12,078.12 = 5,931.38/x
  3. Step 3: Cross multiply
    8,749.16x = 12,078.12 × 5,931.38
  4. Step 4: Simplify right side
    8,749.16x = 71,639,919.41
  5. Step 5: Solve for x
    x = 71,639,919.41/8,749.16
  6. Step 6: Final answer
    x = 8,188.21

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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.