Home / 8,781.70-12,117.90-5,004.77

Finding the Fourth Proportional to 8,781.70, 12,117.90 and 5,004.77

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Solution

The fourth proportional to 8,781.70, 12,117.90 and 5,004.77 is: 6,906.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,781.70 : 12,117.90 = 5,004.77 : x
  2. Step 2: Convert to fraction form
    8,781.70/12,117.90 = 5,004.77/x
  3. Step 3: Cross multiply
    8,781.70x = 12,117.90 × 5,004.77
  4. Step 4: Simplify right side
    8,781.70x = 60,647,328.72
  5. Step 5: Solve for x
    x = 60,647,328.72/8,781.70
  6. Step 6: Final answer
    x = 6,906.10

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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.