Home / 7,020.20-10,532.70-3,125.80

Finding the Fourth Proportional to 7,020.20, 10,532.70 and 3,125.80

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Solution

The fourth proportional to 7,020.20, 10,532.70 and 3,125.80 is: 4,689.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,020.20 : 10,532.70 = 3,125.80 : x
  2. Step 2: Convert to fraction form
    7,020.20/10,532.70 = 3,125.80/x
  3. Step 3: Cross multiply
    7,020.20x = 10,532.70 × 3,125.80
  4. Step 4: Simplify right side
    7,020.20x = 32,923,113.66
  5. Step 5: Solve for x
    x = 32,923,113.66/7,020.20
  6. Step 6: Final answer
    x = 4,689.77

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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.