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Finding the Fourth Proportional to 2,686.25, 4,029.51 and 955.01

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Solution

The fourth proportional to 2,686.25, 4,029.51 and 955.01 is: 1,432.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.25 : 4,029.51 = 955.01 : x
  2. Step 2: Convert to fraction form
    2,686.25/4,029.51 = 955.01/x
  3. Step 3: Cross multiply
    2,686.25x = 4,029.51 × 955.01
  4. Step 4: Simplify right side
    2,686.25x = 3,848,222.35
  5. Step 5: Solve for x
    x = 3,848,222.35/2,686.25
  6. Step 6: Final answer
    x = 1,432.56

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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.