Home / 5,247.98-7,242.54-2,890.12

Finding the Fourth Proportional to 5,247.98, 7,242.54 and 2,890.12

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Solution

The fourth proportional to 5,247.98, 7,242.54 and 2,890.12 is: 3,988.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247.98 : 7,242.54 = 2,890.12 : x
  2. Step 2: Convert to fraction form
    5,247.98/7,242.54 = 2,890.12/x
  3. Step 3: Cross multiply
    5,247.98x = 7,242.54 × 2,890.12
  4. Step 4: Simplify right side
    5,247.98x = 20,931,773.97
  5. Step 5: Solve for x
    x = 20,931,773.97/5,247.98
  6. Step 6: Final answer
    x = 3,988.54

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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.