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Finding the Fourth Proportional to 5,417.53, 8,126.53 and 1,719.68

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Solution

The fourth proportional to 5,417.53, 8,126.53 and 1,719.68 is: 2,579.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,417.53 : 8,126.53 = 1,719.68 : x
  2. Step 2: Convert to fraction form
    5,417.53/8,126.53 = 1,719.68/x
  3. Step 3: Cross multiply
    5,417.53x = 8,126.53 × 1,719.68
  4. Step 4: Simplify right side
    5,417.53x = 13,975,031.11
  5. Step 5: Solve for x
    x = 13,975,031.11/5,417.53
  6. Step 6: Final answer
    x = 2,579.59

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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.