Home / 5,715.89-8,574.40-2,157.11

Finding the Fourth Proportional to 5,715.89, 8,574.40 and 2,157.11

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Solution

The fourth proportional to 5,715.89, 8,574.40 and 2,157.11 is: 3,235.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,715.89 : 8,574.40 = 2,157.11 : x
  2. Step 2: Convert to fraction form
    5,715.89/8,574.40 = 2,157.11/x
  3. Step 3: Cross multiply
    5,715.89x = 8,574.40 × 2,157.11
  4. Step 4: Simplify right side
    5,715.89x = 18,495,923.98
  5. Step 5: Solve for x
    x = 18,495,923.98/5,715.89
  6. Step 6: Final answer
    x = 3,235.88

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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.