Home / 2,137.12-2,948.78-1,252.76

Finding the Fourth Proportional to 2,137.12, 2,948.78 and 1,252.76

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Solution

The fourth proportional to 2,137.12, 2,948.78 and 1,252.76 is: 1,728.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,137.12 : 2,948.78 = 1,252.76 : x
  2. Step 2: Convert to fraction form
    2,137.12/2,948.78 = 1,252.76/x
  3. Step 3: Cross multiply
    2,137.12x = 2,948.78 × 1,252.76
  4. Step 4: Simplify right side
    2,137.12x = 3,694,113.63
  5. Step 5: Solve for x
    x = 3,694,113.63/2,137.12
  6. Step 6: Final answer
    x = 1,728.55

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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.