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Finding the Fourth Proportional to 2,717.47, 3,751.85 and 1,868.13

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Solution

The fourth proportional to 2,717.47, 3,751.85 and 1,868.13 is: 2,579.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,717.47 : 3,751.85 = 1,868.13 : x
  2. Step 2: Convert to fraction form
    2,717.47/3,751.85 = 1,868.13/x
  3. Step 3: Cross multiply
    2,717.47x = 3,751.85 × 1,868.13
  4. Step 4: Simplify right side
    2,717.47x = 7,008,943.54
  5. Step 5: Solve for x
    x = 7,008,943.54/2,717.47
  6. Step 6: Final answer
    x = 2,579.22

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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.