Home / 7,144.92-9,860.72-4,120.16

Finding the Fourth Proportional to 7,144.92, 9,860.72 and 4,120.16

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Solution

The fourth proportional to 7,144.92, 9,860.72 and 4,120.16 is: 5,686.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,144.92 : 9,860.72 = 4,120.16 : x
  2. Step 2: Convert to fraction form
    7,144.92/9,860.72 = 4,120.16/x
  3. Step 3: Cross multiply
    7,144.92x = 9,860.72 × 4,120.16
  4. Step 4: Simplify right side
    7,144.92x = 40,627,715.17
  5. Step 5: Solve for x
    x = 40,627,715.17/7,144.92
  6. Step 6: Final answer
    x = 5,686.24

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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.