Home / 2,142.84-2,956.12-1,258.62

Finding the Fourth Proportional to 2,142.84, 2,956.12 and 1,258.62

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Solution

The fourth proportional to 2,142.84, 2,956.12 and 1,258.62 is: 1,736.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,142.84 : 2,956.12 = 1,258.62 : x
  2. Step 2: Convert to fraction form
    2,142.84/2,956.12 = 1,258.62/x
  3. Step 3: Cross multiply
    2,142.84x = 2,956.12 × 1,258.62
  4. Step 4: Simplify right side
    2,142.84x = 3,720,631.75
  5. Step 5: Solve for x
    x = 3,720,631.75/2,142.84
  6. Step 6: Final answer
    x = 1,736.31

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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.