Home / 5,143.30-7,718.55-2,223.70

Finding the Fourth Proportional to 5,143.30, 7,718.55 and 2,223.70

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Solution

The fourth proportional to 5,143.30, 7,718.55 and 2,223.70 is: 3,337.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.30 : 7,718.55 = 2,223.70 : x
  2. Step 2: Convert to fraction form
    5,143.30/7,718.55 = 2,223.70/x
  3. Step 3: Cross multiply
    5,143.30x = 7,718.55 × 2,223.70
  4. Step 4: Simplify right side
    5,143.30x = 17,163,739.64
  5. Step 5: Solve for x
    x = 17,163,739.64/5,143.30
  6. Step 6: Final answer
    x = 3,337.11

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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.