Home / 7,350.91-10,143.68-4,120.72

Finding the Fourth Proportional to 7,350.91, 10,143.68 and 4,120.72

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Solution

The fourth proportional to 7,350.91, 10,143.68 and 4,120.72 is: 5,686.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,350.91 : 10,143.68 = 4,120.72 : x
  2. Step 2: Convert to fraction form
    7,350.91/10,143.68 = 4,120.72/x
  3. Step 3: Cross multiply
    7,350.91x = 10,143.68 × 4,120.72
  4. Step 4: Simplify right side
    7,350.91x = 41,799,219.09
  5. Step 5: Solve for x
    x = 41,799,219.09/7,350.91
  6. Step 6: Final answer
    x = 5,686.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.