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Finding the Fourth Proportional to 2,675.74, 4,014.36 and 920.97

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Solution

The fourth proportional to 2,675.74, 4,014.36 and 920.97 is: 1,381.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,675.74 : 4,014.36 = 920.97 : x
  2. Step 2: Convert to fraction form
    2,675.74/4,014.36 = 920.97/x
  3. Step 3: Cross multiply
    2,675.74x = 4,014.36 × 920.97
  4. Step 4: Simplify right side
    2,675.74x = 3,697,105.13
  5. Step 5: Solve for x
    x = 3,697,105.13/2,675.74
  6. Step 6: Final answer
    x = 1,381.71

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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.