Home / 3,520.32-5,278.04-1,787.76

Finding the Fourth Proportional to 3,520.32, 5,278.04 and 1,787.76

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Solution

The fourth proportional to 3,520.32, 5,278.04 and 1,787.76 is: 2,680.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.32 : 5,278.04 = 1,787.76 : x
  2. Step 2: Convert to fraction form
    3,520.32/5,278.04 = 1,787.76/x
  3. Step 3: Cross multiply
    3,520.32x = 5,278.04 × 1,787.76
  4. Step 4: Simplify right side
    3,520.32x = 9,435,868.79
  5. Step 5: Solve for x
    x = 9,435,868.79/3,520.32
  6. Step 6: Final answer
    x = 2,680.40

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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.