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Finding the Fourth Proportional to 2,695.78, 4,043.72 and 846.85

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Solution

The fourth proportional to 2,695.78, 4,043.72 and 846.85 is: 1,270.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,695.78 : 4,043.72 = 846.85 : x
  2. Step 2: Convert to fraction form
    2,695.78/4,043.72 = 846.85/x
  3. Step 3: Cross multiply
    2,695.78x = 4,043.72 × 846.85
  4. Step 4: Simplify right side
    2,695.78x = 3,424,424.28
  5. Step 5: Solve for x
    x = 3,424,424.28/2,695.78
  6. Step 6: Final answer
    x = 1,270.29

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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.