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Finding the Fourth Proportional to 2,718.48, 4,078.08 and 1,256.88

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Solution

The fourth proportional to 2,718.48, 4,078.08 and 1,256.88 is: 1,885.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,718.48 : 4,078.08 = 1,256.88 : x
  2. Step 2: Convert to fraction form
    2,718.48/4,078.08 = 1,256.88/x
  3. Step 3: Cross multiply
    2,718.48x = 4,078.08 × 1,256.88
  4. Step 4: Simplify right side
    2,718.48x = 5,125,657.19
  5. Step 5: Solve for x
    x = 5,125,657.19/2,718.48
  6. Step 6: Final answer
    x = 1,885.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.