Home / 3,715.18-5,123.99-3,157.49

Finding the Fourth Proportional to 3,715.18, 5,123.99 and 3,157.49

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Solution

The fourth proportional to 3,715.18, 5,123.99 and 3,157.49 is: 4,354.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,715.18 : 5,123.99 = 3,157.49 : x
  2. Step 2: Convert to fraction form
    3,715.18/5,123.99 = 3,157.49/x
  3. Step 3: Cross multiply
    3,715.18x = 5,123.99 × 3,157.49
  4. Step 4: Simplify right side
    3,715.18x = 16,178,967.89
  5. Step 5: Solve for x
    x = 16,178,967.89/3,715.18
  6. Step 6: Final answer
    x = 4,354.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.