Home / 1,442.57-2,161.01-749.69

Finding the Fourth Proportional to 1,442.57, 2,161.01 and 749.69

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Solution

The fourth proportional to 1,442.57, 2,161.01 and 749.69 is: 1,123.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442.57 : 2,161.01 = 749.69 : x
  2. Step 2: Convert to fraction form
    1,442.57/2,161.01 = 749.69/x
  3. Step 3: Cross multiply
    1,442.57x = 2,161.01 × 749.69
  4. Step 4: Simplify right side
    1,442.57x = 1,620,094.86
  5. Step 5: Solve for x
    x = 1,620,094.86/1,442.57
  6. Step 6: Final answer
    x = 1,123.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.