Home / 7,245.72-10,868.40-2,315.28

Finding the Fourth Proportional to 7,245.72, 10,868.40 and 2,315.28

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Solution

The fourth proportional to 7,245.72, 10,868.40 and 2,315.28 is: 3,472.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,245.72 : 10,868.40 = 2,315.28 : x
  2. Step 2: Convert to fraction form
    7,245.72/10,868.40 = 2,315.28/x
  3. Step 3: Cross multiply
    7,245.72x = 10,868.40 × 2,315.28
  4. Step 4: Simplify right side
    7,245.72x = 25,163,389.15
  5. Step 5: Solve for x
    x = 25,163,389.15/7,245.72
  6. Step 6: Final answer
    x = 3,472.86

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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.