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Finding the Fourth Proportional to 2,686.80, 4,029.24 and 955.08

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Solution

The fourth proportional to 2,686.80, 4,029.24 and 955.08 is: 1,432.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.80 : 4,029.24 = 955.08 : x
  2. Step 2: Convert to fraction form
    2,686.80/4,029.24 = 955.08/x
  3. Step 3: Cross multiply
    2,686.80x = 4,029.24 × 955.08
  4. Step 4: Simplify right side
    2,686.80x = 3,848,246.54
  5. Step 5: Solve for x
    x = 3,848,246.54/2,686.80
  6. Step 6: Final answer
    x = 1,432.28

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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.