Home / 1,242.16-1,874.34-1,191.58

Finding the Fourth Proportional to 1,242.16, 1,874.34 and 1,191.58

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Solution

The fourth proportional to 1,242.16, 1,874.34 and 1,191.58 is: 1,798.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,242.16 : 1,874.34 = 1,191.58 : x
  2. Step 2: Convert to fraction form
    1,242.16/1,874.34 = 1,191.58/x
  3. Step 3: Cross multiply
    1,242.16x = 1,874.34 × 1,191.58
  4. Step 4: Simplify right side
    1,242.16x = 2,233,421.37
  5. Step 5: Solve for x
    x = 2,233,421.37/1,242.16
  6. Step 6: Final answer
    x = 1,798.02

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.