Home / 7,452.40-10,279.20-5,090.80

Finding the Fourth Proportional to 7,452.40, 10,279.20 and 5,090.80

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Solution

The fourth proportional to 7,452.40, 10,279.20 and 5,090.80 is: 7,021.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,452.40 : 10,279.20 = 5,090.80 : x
  2. Step 2: Convert to fraction form
    7,452.40/10,279.20 = 5,090.80/x
  3. Step 3: Cross multiply
    7,452.40x = 10,279.20 × 5,090.80
  4. Step 4: Simplify right side
    7,452.40x = 52,329,351.36
  5. Step 5: Solve for x
    x = 52,329,351.36/7,452.40
  6. Step 6: Final answer
    x = 7,021.81

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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.