Home / 1,214.04-1,675.42-689.96

Finding the Fourth Proportional to 1,214.04, 1,675.42 and 689.96

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Solution

The fourth proportional to 1,214.04, 1,675.42 and 689.96 is: 952.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214.04 : 1,675.42 = 689.96 : x
  2. Step 2: Convert to fraction form
    1,214.04/1,675.42 = 689.96/x
  3. Step 3: Cross multiply
    1,214.04x = 1,675.42 × 689.96
  4. Step 4: Simplify right side
    1,214.04x = 1,155,972.78
  5. Step 5: Solve for x
    x = 1,155,972.78/1,214.04
  6. Step 6: Final answer
    x = 952.17

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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.