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Finding the Fourth Proportional to 1,635.53, 2,258.17 and 1,256.79

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Solution

The fourth proportional to 1,635.53, 2,258.17 and 1,256.79 is: 1,735.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,635.53 : 2,258.17 = 1,256.79 : x
  2. Step 2: Convert to fraction form
    1,635.53/2,258.17 = 1,256.79/x
  3. Step 3: Cross multiply
    1,635.53x = 2,258.17 × 1,256.79
  4. Step 4: Simplify right side
    1,635.53x = 2,838,045.47
  5. Step 5: Solve for x
    x = 2,838,045.47/1,635.53
  6. Step 6: Final answer
    x = 1,735.25

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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.