Home / 7,141.35-9,855.14-4,158.15

Finding the Fourth Proportional to 7,141.35, 9,855.14 and 4,158.15

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Solution

The fourth proportional to 7,141.35, 9,855.14 and 4,158.15 is: 5,738.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,141.35 : 9,855.14 = 4,158.15 : x
  2. Step 2: Convert to fraction form
    7,141.35/9,855.14 = 4,158.15/x
  3. Step 3: Cross multiply
    7,141.35x = 9,855.14 × 4,158.15
  4. Step 4: Simplify right side
    7,141.35x = 40,979,129.60
  5. Step 5: Solve for x
    x = 40,979,129.60/7,141.35
  6. Step 6: Final answer
    x = 5,738.29

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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.