Home / 2,861.17-4,287.62-1,398.67

Finding the Fourth Proportional to 2,861.17, 4,287.62 and 1,398.67

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Solution

The fourth proportional to 2,861.17, 4,287.62 and 1,398.67 is: 2,095.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.17 : 4,287.62 = 1,398.67 : x
  2. Step 2: Convert to fraction form
    2,861.17/4,287.62 = 1,398.67/x
  3. Step 3: Cross multiply
    2,861.17x = 4,287.62 × 1,398.67
  4. Step 4: Simplify right side
    2,861.17x = 5,996,958.47
  5. Step 5: Solve for x
    x = 5,996,958.47/2,861.17
  6. Step 6: Final answer
    x = 2,095.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.