Home / 1,767.22-2,438.85-981.25

Finding the Fourth Proportional to 1,767.22, 2,438.85 and 981.25

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Solution

The fourth proportional to 1,767.22, 2,438.85 and 981.25 is: 1,354.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,767.22 : 2,438.85 = 981.25 : x
  2. Step 2: Convert to fraction form
    1,767.22/2,438.85 = 981.25/x
  3. Step 3: Cross multiply
    1,767.22x = 2,438.85 × 981.25
  4. Step 4: Simplify right side
    1,767.22x = 2,393,121.56
  5. Step 5: Solve for x
    x = 2,393,121.56/1,767.22
  6. Step 6: Final answer
    x = 1,354.17

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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.