Home / 1,438.14-1,982.52-1,017.12

Finding the Fourth Proportional to 1,438.14, 1,982.52 and 1,017.12

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Solution

The fourth proportional to 1,438.14, 1,982.52 and 1,017.12 is: 1,402.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438.14 : 1,982.52 = 1,017.12 : x
  2. Step 2: Convert to fraction form
    1,438.14/1,982.52 = 1,017.12/x
  3. Step 3: Cross multiply
    1,438.14x = 1,982.52 × 1,017.12
  4. Step 4: Simplify right side
    1,438.14x = 2,016,460.74
  5. Step 5: Solve for x
    x = 2,016,460.74/1,438.14
  6. Step 6: Final answer
    x = 1,402.13

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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.