Home / 1,934.28-2,902.50-780.12

Finding the Fourth Proportional to 1,934.28, 2,902.50 and 780.12

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Solution

The fourth proportional to 1,934.28, 2,902.50 and 780.12 is: 1,170.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,934.28 : 2,902.50 = 780.12 : x
  2. Step 2: Convert to fraction form
    1,934.28/2,902.50 = 780.12/x
  3. Step 3: Cross multiply
    1,934.28x = 2,902.50 × 780.12
  4. Step 4: Simplify right side
    1,934.28x = 2,264,298.30
  5. Step 5: Solve for x
    x = 2,264,298.30/1,934.28
  6. Step 6: Final answer
    x = 1,170.62

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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.