Home / 7,486.20-10,331.16-4,129.20

Finding the Fourth Proportional to 7,486.20, 10,331.16 and 4,129.20

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Solution

The fourth proportional to 7,486.20, 10,331.16 and 4,129.20 is: 5,698.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,486.20 : 10,331.16 = 4,129.20 : x
  2. Step 2: Convert to fraction form
    7,486.20/10,331.16 = 4,129.20/x
  3. Step 3: Cross multiply
    7,486.20x = 10,331.16 × 4,129.20
  4. Step 4: Simplify right side
    7,486.20x = 42,659,425.87
  5. Step 5: Solve for x
    x = 42,659,425.87/7,486.20
  6. Step 6: Final answer
    x = 5,698.41

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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.