Home / 1,143.40-1,575.19-942.93

Finding the Fourth Proportional to 1,143.40, 1,575.19 and 942.93

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Solution

The fourth proportional to 1,143.40, 1,575.19 and 942.93 is: 1,299.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,143.40 : 1,575.19 = 942.93 : x
  2. Step 2: Convert to fraction form
    1,143.40/1,575.19 = 942.93/x
  3. Step 3: Cross multiply
    1,143.40x = 1,575.19 × 942.93
  4. Step 4: Simplify right side
    1,143.40x = 1,485,293.91
  5. Step 5: Solve for x
    x = 1,485,293.91/1,143.40
  6. Step 6: Final answer
    x = 1,299.02

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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.