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Finding the Fourth Proportional to 2,750.79, 3,791.28 and 2,445.42

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Solution

The fourth proportional to 2,750.79, 3,791.28 and 2,445.42 is: 3,370.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,750.79 : 3,791.28 = 2,445.42 : x
  2. Step 2: Convert to fraction form
    2,750.79/3,791.28 = 2,445.42/x
  3. Step 3: Cross multiply
    2,750.79x = 3,791.28 × 2,445.42
  4. Step 4: Simplify right side
    2,750.79x = 9,271,271.94
  5. Step 5: Solve for x
    x = 9,271,271.94/2,750.79
  6. Step 6: Final answer
    x = 3,370.40

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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.