Home / 1,442.11-2,165.18-739.81

Finding the Fourth Proportional to 1,442.11, 2,165.18 and 739.81

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Solution

The fourth proportional to 1,442.11, 2,165.18 and 739.81 is: 1,110.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442.11 : 2,165.18 = 739.81 : x
  2. Step 2: Convert to fraction form
    1,442.11/2,165.18 = 739.81/x
  3. Step 3: Cross multiply
    1,442.11x = 2,165.18 × 739.81
  4. Step 4: Simplify right side
    1,442.11x = 1,601,821.82
  5. Step 5: Solve for x
    x = 1,601,821.82/1,442.11
  6. Step 6: Final answer
    x = 1,110.75

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1.5x scale

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.