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Finding the Fourth Proportional to 2,637.78, 3,640.11 and 1,518.71

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Solution

The fourth proportional to 2,637.78, 3,640.11 and 1,518.71 is: 2,095.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,637.78 : 3,640.11 = 1,518.71 : x
  2. Step 2: Convert to fraction form
    2,637.78/3,640.11 = 1,518.71/x
  3. Step 3: Cross multiply
    2,637.78x = 3,640.11 × 1,518.71
  4. Step 4: Simplify right side
    2,637.78x = 5,528,253.26
  5. Step 5: Solve for x
    x = 5,528,253.26/2,637.78
  6. Step 6: Final answer
    x = 2,095.80

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1.5x scale

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.