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Finding the Fourth Proportional to 2,783.52, 4,142.52 and 2,679.84

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Solution

The fourth proportional to 2,783.52, 4,142.52 and 2,679.84 is: 3,988.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,783.52 : 4,142.52 = 2,679.84 : x
  2. Step 2: Convert to fraction form
    2,783.52/4,142.52 = 2,679.84/x
  3. Step 3: Cross multiply
    2,783.52x = 4,142.52 × 2,679.84
  4. Step 4: Simplify right side
    2,783.52x = 11,101,290.80
  5. Step 5: Solve for x
    x = 11,101,290.80/2,783.52
  6. Step 6: Final answer
    x = 3,988.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.