Home / 2,543.08-3,809.28-1,306.72

Finding the Fourth Proportional to 2,543.08, 3,809.28 and 1,306.72

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Solution

The fourth proportional to 2,543.08, 3,809.28 and 1,306.72 is: 1,957.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,543.08 : 3,809.28 = 1,306.72 : x
  2. Step 2: Convert to fraction form
    2,543.08/3,809.28 = 1,306.72/x
  3. Step 3: Cross multiply
    2,543.08x = 3,809.28 × 1,306.72
  4. Step 4: Simplify right side
    2,543.08x = 4,977,662.36
  5. Step 5: Solve for x
    x = 4,977,662.36/2,543.08
  6. Step 6: Final answer
    x = 1,957.34

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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.