Home / 2,695.47-4,039.78-1,213.11

Finding the Fourth Proportional to 2,695.47, 4,039.78 and 1,213.11

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Solution

The fourth proportional to 2,695.47, 4,039.78 and 1,213.11 is: 1,818.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,695.47 : 4,039.78 = 1,213.11 : x
  2. Step 2: Convert to fraction form
    2,695.47/4,039.78 = 1,213.11/x
  3. Step 3: Cross multiply
    2,695.47x = 4,039.78 × 1,213.11
  4. Step 4: Simplify right side
    2,695.47x = 4,900,697.52
  5. Step 5: Solve for x
    x = 4,900,697.52/2,695.47
  6. Step 6: Final answer
    x = 1,818.12

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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.