Home / 2,685.51-3,706.17-1,787.71

Finding the Fourth Proportional to 2,685.51, 3,706.17 and 1,787.71

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Solution

The fourth proportional to 2,685.51, 3,706.17 and 1,787.71 is: 2,467.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,685.51 : 3,706.17 = 1,787.71 : x
  2. Step 2: Convert to fraction form
    2,685.51/3,706.17 = 1,787.71/x
  3. Step 3: Cross multiply
    2,685.51x = 3,706.17 × 1,787.71
  4. Step 4: Simplify right side
    2,685.51x = 6,625,557.17
  5. Step 5: Solve for x
    x = 6,625,557.17/2,685.51
  6. Step 6: Final answer
    x = 2,467.15

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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.