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Finding the Fourth Proportional to 2,515.54, 3,771.55 and 955.63

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Solution

The fourth proportional to 2,515.54, 3,771.55 and 955.63 is: 1,432.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,515.54 : 3,771.55 = 955.63 : x
  2. Step 2: Convert to fraction form
    2,515.54/3,771.55 = 955.63/x
  3. Step 3: Cross multiply
    2,515.54x = 3,771.55 × 955.63
  4. Step 4: Simplify right side
    2,515.54x = 3,604,206.33
  5. Step 5: Solve for x
    x = 3,604,206.33/2,515.54
  6. Step 6: Final answer
    x = 1,432.78

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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.