Home / 1,103.13-1,522.26-631.04

Finding the Fourth Proportional to 1,103.13, 1,522.26 and 631.04

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Solution

The fourth proportional to 1,103.13, 1,522.26 and 631.04 is: 870.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,103.13 : 1,522.26 = 631.04 : x
  2. Step 2: Convert to fraction form
    1,103.13/1,522.26 = 631.04/x
  3. Step 3: Cross multiply
    1,103.13x = 1,522.26 × 631.04
  4. Step 4: Simplify right side
    1,103.13x = 960,599.34
  5. Step 5: Solve for x
    x = 960,599.34/1,103.13
  6. Step 6: Final answer
    x = 870.79

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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.