Home / 7,020.89-10,531.13-2,859.87

Finding the Fourth Proportional to 7,020.89, 10,531.13 and 2,859.87

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Solution

The fourth proportional to 7,020.89, 10,531.13 and 2,859.87 is: 4,289.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,020.89 : 10,531.13 = 2,859.87 : x
  2. Step 2: Convert to fraction form
    7,020.89/10,531.13 = 2,859.87/x
  3. Step 3: Cross multiply
    7,020.89x = 10,531.13 × 2,859.87
  4. Step 4: Simplify right side
    7,020.89x = 30,117,669.90
  5. Step 5: Solve for x
    x = 30,117,669.90/7,020.89
  6. Step 6: Final answer
    x = 4,289.72

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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.