Home / 1,657.17-2,286.55-1,258.72

Finding the Fourth Proportional to 1,657.17, 2,286.55 and 1,258.72

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Solution

The fourth proportional to 1,657.17, 2,286.55 and 1,258.72 is: 1,736.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,657.17 : 2,286.55 = 1,258.72 : x
  2. Step 2: Convert to fraction form
    1,657.17/2,286.55 = 1,258.72/x
  3. Step 3: Cross multiply
    1,657.17x = 2,286.55 × 1,258.72
  4. Step 4: Simplify right side
    1,657.17x = 2,878,133.65
  5. Step 5: Solve for x
    x = 2,878,133.65/1,657.17
  6. Step 6: Final answer
    x = 1,736.78

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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.