Home / 2,642.85-3,965.30-1,000.55

Finding the Fourth Proportional to 2,642.85, 3,965.30 and 1,000.55

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Solution

The fourth proportional to 2,642.85, 3,965.30 and 1,000.55 is: 1,501.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,642.85 : 3,965.30 = 1,000.55 : x
  2. Step 2: Convert to fraction form
    2,642.85/3,965.30 = 1,000.55/x
  3. Step 3: Cross multiply
    2,642.85x = 3,965.30 × 1,000.55
  4. Step 4: Simplify right side
    2,642.85x = 3,967,495.21
  5. Step 5: Solve for x
    x = 3,967,495.21/2,642.85
  6. Step 6: Final answer
    x = 1,501.22

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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.