Home / 5,417.20-8,127.01-1,719.55

Finding the Fourth Proportional to 5,417.20, 8,127.01 and 1,719.55

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Solution

The fourth proportional to 5,417.20, 8,127.01 and 1,719.55 is: 2,579.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,417.20 : 8,127.01 = 1,719.55 : x
  2. Step 2: Convert to fraction form
    5,417.20/8,127.01 = 1,719.55/x
  3. Step 3: Cross multiply
    5,417.20x = 8,127.01 × 1,719.55
  4. Step 4: Simplify right side
    5,417.20x = 13,974,759.41
  5. Step 5: Solve for x
    x = 13,974,759.41/5,417.20
  6. Step 6: Final answer
    x = 2,579.70

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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.