Home / 1,541.11-2,311.65-718.93

Finding the Fourth Proportional to 1,541.11, 2,311.65 and 718.93

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Solution

The fourth proportional to 1,541.11, 2,311.65 and 718.93 is: 1,078.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,541.11 : 2,311.65 = 718.93 : x
  2. Step 2: Convert to fraction form
    1,541.11/2,311.65 = 718.93/x
  3. Step 3: Cross multiply
    1,541.11x = 2,311.65 × 718.93
  4. Step 4: Simplify right side
    1,541.11x = 1,661,914.53
  5. Step 5: Solve for x
    x = 1,661,914.53/1,541.11
  6. Step 6: Final answer
    x = 1,078.39

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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.