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Finding the Fourth Proportional to 2,686.84, 3,708.54 and 1,552.68

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Solution

The fourth proportional to 2,686.84, 3,708.54 and 1,552.68 is: 2,143.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.84 : 3,708.54 = 1,552.68 : x
  2. Step 2: Convert to fraction form
    2,686.84/3,708.54 = 1,552.68/x
  3. Step 3: Cross multiply
    2,686.84x = 3,708.54 × 1,552.68
  4. Step 4: Simplify right side
    2,686.84x = 5,758,175.89
  5. Step 5: Solve for x
    x = 5,758,175.89/2,686.84
  6. Step 6: Final answer
    x = 2,143.11

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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.