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Finding the Fourth Proportional to 2,920.56, 4,028.79 and 1,741.40

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Solution

The fourth proportional to 2,920.56, 4,028.79 and 1,741.40 is: 2,402.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.56 : 4,028.79 = 1,741.40 : x
  2. Step 2: Convert to fraction form
    2,920.56/4,028.79 = 1,741.40/x
  3. Step 3: Cross multiply
    2,920.56x = 4,028.79 × 1,741.40
  4. Step 4: Simplify right side
    2,920.56x = 7,015,726.60
  5. Step 5: Solve for x
    x = 7,015,726.60/2,920.56
  6. Step 6: Final answer
    x = 2,402.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.