Home / 1,248.75-1,730.56-1,231.13

Finding the Fourth Proportional to 1,248.75, 1,730.56 and 1,231.13

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Solution

The fourth proportional to 1,248.75, 1,730.56 and 1,231.13 is: 1,706.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,248.75 : 1,730.56 = 1,231.13 : x
  2. Step 2: Convert to fraction form
    1,248.75/1,730.56 = 1,231.13/x
  3. Step 3: Cross multiply
    1,248.75x = 1,730.56 × 1,231.13
  4. Step 4: Simplify right side
    1,248.75x = 2,130,538.18
  5. Step 5: Solve for x
    x = 2,130,538.18/1,248.75
  6. Step 6: Final answer
    x = 1,706.14

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.