Home / 7,245.40-10,868.10-2,315.20

Finding the Fourth Proportional to 7,245.40, 10,868.10 and 2,315.20

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Solution

The fourth proportional to 7,245.40, 10,868.10 and 2,315.20 is: 3,472.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,245.40 : 10,868.10 = 2,315.20 : x
  2. Step 2: Convert to fraction form
    7,245.40/10,868.10 = 2,315.20/x
  3. Step 3: Cross multiply
    7,245.40x = 10,868.10 × 2,315.20
  4. Step 4: Simplify right side
    7,245.40x = 25,161,825.12
  5. Step 5: Solve for x
    x = 25,161,825.12/7,245.40
  6. Step 6: Final answer
    x = 3,472.80

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Similar ratio
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1.5x scale

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.