Home / 1,242.02-1,725.88-1,228.52

Finding the Fourth Proportional to 1,242.02, 1,725.88 and 1,228.52

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Solution

The fourth proportional to 1,242.02, 1,725.88 and 1,228.52 is: 1,707.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242.02 : 1,725.88 = 1,228.52 : x
  2. Step 2: Convert to fraction form
    1,242.02/1,725.88 = 1,228.52/x
  3. Step 3: Cross multiply
    1,242.02x = 1,725.88 × 1,228.52
  4. Step 4: Simplify right side
    1,242.02x = 2,120,278.10
  5. Step 5: Solve for x
    x = 2,120,278.10/1,242.02
  6. Step 6: Final answer
    x = 1,707.12

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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.