Home / 6,981.20-10,471.92-1,787.12

Finding the Fourth Proportional to 6,981.20, 10,471.92 and 1,787.12

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Solution

The fourth proportional to 6,981.20, 10,471.92 and 1,787.12 is: 2,680.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,981.20 : 10,471.92 = 1,787.12 : x
  2. Step 2: Convert to fraction form
    6,981.20/10,471.92 = 1,787.12/x
  3. Step 3: Cross multiply
    6,981.20x = 10,471.92 × 1,787.12
  4. Step 4: Simplify right side
    6,981.20x = 18,714,577.67
  5. Step 5: Solve for x
    x = 18,714,577.67/6,981.20
  6. Step 6: Final answer
    x = 2,680.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.