Home / 2,631.85-3,631.29-1,782.66

Finding the Fourth Proportional to 2,631.85, 3,631.29 and 1,782.66

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Solution

The fourth proportional to 2,631.85, 3,631.29 and 1,782.66 is: 2,459.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.85 : 3,631.29 = 1,782.66 : x
  2. Step 2: Convert to fraction form
    2,631.85/3,631.29 = 1,782.66/x
  3. Step 3: Cross multiply
    2,631.85x = 3,631.29 × 1,782.66
  4. Step 4: Simplify right side
    2,631.85x = 6,473,346.52
  5. Step 5: Solve for x
    x = 6,473,346.52/2,631.85
  6. Step 6: Final answer
    x = 2,459.62

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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.