Home / 1,345.08-2,017.13-743.87

Finding the Fourth Proportional to 1,345.08, 2,017.13 and 743.87

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Solution

The fourth proportional to 1,345.08, 2,017.13 and 743.87 is: 1,115.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,345.08 : 2,017.13 = 743.87 : x
  2. Step 2: Convert to fraction form
    1,345.08/2,017.13 = 743.87/x
  3. Step 3: Cross multiply
    1,345.08x = 2,017.13 × 743.87
  4. Step 4: Simplify right side
    1,345.08x = 1,500,486.43
  5. Step 5: Solve for x
    x = 1,500,486.43/1,345.08
  6. Step 6: Final answer
    x = 1,115.54

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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.