Home / 5,247.88-7,242.09-2,890.24

Finding the Fourth Proportional to 5,247.88, 7,242.09 and 2,890.24

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Solution

The fourth proportional to 5,247.88, 7,242.09 and 2,890.24 is: 3,988.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247.88 : 7,242.09 = 2,890.24 : x
  2. Step 2: Convert to fraction form
    5,247.88/7,242.09 = 2,890.24/x
  3. Step 3: Cross multiply
    5,247.88x = 7,242.09 × 2,890.24
  4. Step 4: Simplify right side
    5,247.88x = 20,931,378.20
  5. Step 5: Solve for x
    x = 20,931,378.20/5,247.88
  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.