Home / 1,934.64-2,902.08-780.39

Finding the Fourth Proportional to 1,934.64, 2,902.08 and 780.39

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Solution

The fourth proportional to 1,934.64, 2,902.08 and 780.39 is: 1,170.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,934.64 : 2,902.08 = 780.39 : x
  2. Step 2: Convert to fraction form
    1,934.64/2,902.08 = 780.39/x
  3. Step 3: Cross multiply
    1,934.64x = 2,902.08 × 780.39
  4. Step 4: Simplify right side
    1,934.64x = 2,264,754.21
  5. Step 5: Solve for x
    x = 2,264,754.21/1,934.64
  6. Step 6: Final answer
    x = 1,170.63

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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.