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Finding the Fourth Proportional to 4,939.63, 7,401.06 and 2,987.73

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Solution

The fourth proportional to 4,939.63, 7,401.06 and 2,987.73 is: 4,476.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,939.63 : 7,401.06 = 2,987.73 : x
  2. Step 2: Convert to fraction form
    4,939.63/7,401.06 = 2,987.73/x
  3. Step 3: Cross multiply
    4,939.63x = 7,401.06 × 2,987.73
  4. Step 4: Simplify right side
    4,939.63x = 22,112,368.99
  5. Step 5: Solve for x
    x = 22,112,368.99/4,939.63
  6. Step 6: Final answer
    x = 4,476.53

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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.