Home / 1,142.47-1,579.44-1,132.08

Finding the Fourth Proportional to 1,142.47, 1,579.44 and 1,132.08

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Solution

The fourth proportional to 1,142.47, 1,579.44 and 1,132.08 is: 1,565.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,142.47 : 1,579.44 = 1,132.08 : x
  2. Step 2: Convert to fraction form
    1,142.47/1,579.44 = 1,132.08/x
  3. Step 3: Cross multiply
    1,142.47x = 1,579.44 × 1,132.08
  4. Step 4: Simplify right side
    1,142.47x = 1,788,052.44
  5. Step 5: Solve for x
    x = 1,788,052.44/1,142.47
  6. Step 6: Final answer
    x = 1,565.08

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1.5x scale

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.