Home / 2,717.90-3,752.38-2,087.21

Finding the Fourth Proportional to 2,717.90, 3,752.38 and 2,087.21

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Solution

The fourth proportional to 2,717.90, 3,752.38 and 2,087.21 is: 2,881.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,717.90 : 3,752.38 = 2,087.21 : x
  2. Step 2: Convert to fraction form
    2,717.90/3,752.38 = 2,087.21/x
  3. Step 3: Cross multiply
    2,717.90x = 3,752.38 × 2,087.21
  4. Step 4: Simplify right side
    2,717.90x = 7,832,005.06
  5. Step 5: Solve for x
    x = 7,832,005.06/2,717.90
  6. Step 6: Final answer
    x = 2,881.64

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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.