Home / 3,115.65-4,666.19-1,818.03

Finding the Fourth Proportional to 3,115.65, 4,666.19 and 1,818.03

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Solution

The fourth proportional to 3,115.65, 4,666.19 and 1,818.03 is: 2,722.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.65 : 4,666.19 = 1,818.03 : x
  2. Step 2: Convert to fraction form
    3,115.65/4,666.19 = 1,818.03/x
  3. Step 3: Cross multiply
    3,115.65x = 4,666.19 × 1,818.03
  4. Step 4: Simplify right side
    3,115.65x = 8,483,264.32
  5. Step 5: Solve for x
    x = 8,483,264.32/3,115.65
  6. Step 6: Final answer
    x = 2,722.79

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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.