Home / 8,520.12-11,753.98-4,981.77

Finding the Fourth Proportional to 8,520.12, 11,753.98 and 4,981.77

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Solution

The fourth proportional to 8,520.12, 11,753.98 and 4,981.77 is: 6,872.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,520.12 : 11,753.98 = 4,981.77 : x
  2. Step 2: Convert to fraction form
    8,520.12/11,753.98 = 4,981.77/x
  3. Step 3: Cross multiply
    8,520.12x = 11,753.98 × 4,981.77
  4. Step 4: Simplify right side
    8,520.12x = 58,555,612.49
  5. Step 5: Solve for x
    x = 58,555,612.49/8,520.12
  6. Step 6: Final answer
    x = 6,872.63

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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.