Home / 7,486.76-10,331.80-4,129.70

Finding the Fourth Proportional to 7,486.76, 10,331.80 and 4,129.70

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Solution

The fourth proportional to 7,486.76, 10,331.80 and 4,129.70 is: 5,699.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,486.76 : 10,331.80 = 4,129.70 : x
  2. Step 2: Convert to fraction form
    7,486.76/10,331.80 = 4,129.70/x
  3. Step 3: Cross multiply
    7,486.76x = 10,331.80 × 4,129.70
  4. Step 4: Simplify right side
    7,486.76x = 42,667,234.46
  5. Step 5: Solve for x
    x = 42,667,234.46/7,486.76
  6. Step 6: Final answer
    x = 5,699.03

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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.