Home / 2,618.90-3,613.95-1,440.01

Finding the Fourth Proportional to 2,618.90, 3,613.95 and 1,440.01

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Solution

The fourth proportional to 2,618.90, 3,613.95 and 1,440.01 is: 1,987.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,618.90 : 3,613.95 = 1,440.01 : x
  2. Step 2: Convert to fraction form
    2,618.90/3,613.95 = 1,440.01/x
  3. Step 3: Cross multiply
    2,618.90x = 3,613.95 × 1,440.01
  4. Step 4: Simplify right side
    2,618.90x = 5,204,128.66
  5. Step 5: Solve for x
    x = 5,204,128.66/2,618.90
  6. Step 6: Final answer
    x = 1,987.14

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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.