Home / 7,020.72-10,531.16-2,859.81

Finding the Fourth Proportional to 7,020.72, 10,531.16 and 2,859.81

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Solution

The fourth proportional to 7,020.72, 10,531.16 and 2,859.81 is: 4,289.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,020.72 : 10,531.16 = 2,859.81 : x
  2. Step 2: Convert to fraction form
    7,020.72/10,531.16 = 2,859.81/x
  3. Step 3: Cross multiply
    7,020.72x = 10,531.16 × 2,859.81
  4. Step 4: Simplify right side
    7,020.72x = 30,117,116.68
  5. Step 5: Solve for x
    x = 30,117,116.68/7,020.72
  6. Step 6: Final answer
    x = 4,289.75

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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.