Home / 7,245.12-10,871.28-2,865.72

Finding the Fourth Proportional to 7,245.12, 10,871.28 and 2,865.72

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Solution

The fourth proportional to 7,245.12, 10,871.28 and 2,865.72 is: 4,300.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,245.12 : 10,871.28 = 2,865.72 : x
  2. Step 2: Convert to fraction form
    7,245.12/10,871.28 = 2,865.72/x
  3. Step 3: Cross multiply
    7,245.12x = 10,871.28 × 2,865.72
  4. Step 4: Simplify right side
    7,245.12x = 31,154,044.52
  5. Step 5: Solve for x
    x = 31,154,044.52/7,245.12
  6. Step 6: Final answer
    x = 4,300.00

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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.