Home / 2,045.12-2,821.28-1,258.88

Finding the Fourth Proportional to 2,045.12, 2,821.28 and 1,258.88

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Solution

The fourth proportional to 2,045.12, 2,821.28 and 1,258.88 is: 1,736.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,045.12 : 2,821.28 = 1,258.88 : x
  2. Step 2: Convert to fraction form
    2,045.12/2,821.28 = 1,258.88/x
  3. Step 3: Cross multiply
    2,045.12x = 2,821.28 × 1,258.88
  4. Step 4: Simplify right side
    2,045.12x = 3,551,652.97
  5. Step 5: Solve for x
    x = 3,551,652.97/2,045.12
  6. Step 6: Final answer
    x = 1,736.65

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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.