Home / 5,143.10-7,715.55-2,679.99

Finding the Fourth Proportional to 5,143.10, 7,715.55 and 2,679.99

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Solution

The fourth proportional to 5,143.10, 7,715.55 and 2,679.99 is: 4,020.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.10 : 7,715.55 = 2,679.99 : x
  2. Step 2: Convert to fraction form
    5,143.10/7,715.55 = 2,679.99/x
  3. Step 3: Cross multiply
    5,143.10x = 7,715.55 × 2,679.99
  4. Step 4: Simplify right side
    5,143.10x = 20,677,577.96
  5. Step 5: Solve for x
    x = 20,677,577.96/5,143.10
  6. Step 6: Final answer
    x = 4,020.45

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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.