Home / 2,142.32-2,956.62-1,258.11

Finding the Fourth Proportional to 2,142.32, 2,956.62 and 1,258.11

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Solution

The fourth proportional to 2,142.32, 2,956.62 and 1,258.11 is: 1,736.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142.32 : 2,956.62 = 1,258.11 : x
  2. Step 2: Convert to fraction form
    2,142.32/2,956.62 = 1,258.11/x
  3. Step 3: Cross multiply
    2,142.32x = 2,956.62 × 1,258.11
  4. Step 4: Simplify right side
    2,142.32x = 3,719,753.19
  5. Step 5: Solve for x
    x = 3,719,753.19/2,142.32
  6. Step 6: Final answer
    x = 1,736.32

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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.