Home / 5,145.83-7,717.85-1,447.18

Finding the Fourth Proportional to 5,145.83, 7,717.85 and 1,447.18

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Solution

The fourth proportional to 5,145.83, 7,717.85 and 1,447.18 is: 2,170.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,145.83 : 7,717.85 = 1,447.18 : x
  2. Step 2: Convert to fraction form
    5,145.83/7,717.85 = 1,447.18/x
  3. Step 3: Cross multiply
    5,145.83x = 7,717.85 × 1,447.18
  4. Step 4: Simplify right side
    5,145.83x = 11,169,118.16
  5. Step 5: Solve for x
    x = 11,169,118.16/5,145.83
  6. Step 6: Final answer
    x = 2,170.52

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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.