Home / 1,680.20-2,318.92-1,400.04

Finding the Fourth Proportional to 1,680.20, 2,318.92 and 1,400.04

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Solution

The fourth proportional to 1,680.20, 2,318.92 and 1,400.04 is: 1,932.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.20 : 2,318.92 = 1,400.04 : x
  2. Step 2: Convert to fraction form
    1,680.20/2,318.92 = 1,400.04/x
  3. Step 3: Cross multiply
    1,680.20x = 2,318.92 × 1,400.04
  4. Step 4: Simplify right side
    1,680.20x = 3,246,580.76
  5. Step 5: Solve for x
    x = 3,246,580.76/1,680.20
  6. Step 6: Final answer
    x = 1,932.26

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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.