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Finding the Fourth Proportional to 5,417.62, 8,124.81 and 1,719.70

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Solution

The fourth proportional to 5,417.62, 8,124.81 and 1,719.70 is: 2,579.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,417.62 : 8,124.81 = 1,719.70 : x
  2. Step 2: Convert to fraction form
    5,417.62/8,124.81 = 1,719.70/x
  3. Step 3: Cross multiply
    5,417.62x = 8,124.81 × 1,719.70
  4. Step 4: Simplify right side
    5,417.62x = 13,972,235.76
  5. Step 5: Solve for x
    x = 13,972,235.76/5,417.62
  6. Step 6: Final answer
    x = 2,579.04

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1.5x scale

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.