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Finding the Fourth Proportional to 2,955.03, 4,432.57 and 763.61

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Solution

The fourth proportional to 2,955.03, 4,432.57 and 763.61 is: 1,145.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,955.03 : 4,432.57 = 763.61 : x
  2. Step 2: Convert to fraction form
    2,955.03/4,432.57 = 763.61/x
  3. Step 3: Cross multiply
    2,955.03x = 4,432.57 × 763.61
  4. Step 4: Simplify right side
    2,955.03x = 3,384,750.96
  5. Step 5: Solve for x
    x = 3,384,750.96/2,955.03
  6. Step 6: Final answer
    x = 1,145.42

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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.