Home / 1,331.56-1,838.82-1,258.84

Finding the Fourth Proportional to 1,331.56, 1,838.82 and 1,258.84

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Solution

The fourth proportional to 1,331.56, 1,838.82 and 1,258.84 is: 1,738.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.56 : 1,838.82 = 1,258.84 : x
  2. Step 2: Convert to fraction form
    1,331.56/1,838.82 = 1,258.84/x
  3. Step 3: Cross multiply
    1,331.56x = 1,838.82 × 1,258.84
  4. Step 4: Simplify right side
    1,331.56x = 2,314,780.17
  5. Step 5: Solve for x
    x = 2,314,780.17/1,331.56
  6. Step 6: Final answer
    x = 1,738.40

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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.