Home / 7,143.26-9,857.19-4,158.98

Finding the Fourth Proportional to 7,143.26, 9,857.19 and 4,158.98

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Solution

The fourth proportional to 7,143.26, 9,857.19 and 4,158.98 is: 5,739.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,143.26 : 9,857.19 = 4,158.98 : x
  2. Step 2: Convert to fraction form
    7,143.26/9,857.19 = 4,158.98/x
  3. Step 3: Cross multiply
    7,143.26x = 9,857.19 × 4,158.98
  4. Step 4: Simplify right side
    7,143.26x = 40,995,856.07
  5. Step 5: Solve for x
    x = 40,995,856.07/7,143.26
  6. Step 6: Final answer
    x = 5,739.10

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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.