Home / 2,613.80-3,606-1,618.40

Finding the Fourth Proportional to 2,613.80, 3,606 and 1,618.40

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Solution

The fourth proportional to 2,613.80, 3,606 and 1,618.40 is: 2,232.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,613.80 : 3,606 = 1,618.40 : x
  2. Step 2: Convert to fraction form
    2,613.80/3,606 = 1,618.40/x
  3. Step 3: Cross multiply
    2,613.80x = 3,606 × 1,618.40
  4. Step 4: Simplify right side
    2,613.80x = 5,835,950.40
  5. Step 5: Solve for x
    x = 5,835,950.40/2,613.80
  6. Step 6: Final answer
    x = 2,232.75

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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.