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Finding the Fourth Proportional to 2,741.01, 4,111.74 and 891.65

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Solution

The fourth proportional to 2,741.01, 4,111.74 and 891.65 is: 1,337.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,741.01 : 4,111.74 = 891.65 : x
  2. Step 2: Convert to fraction form
    2,741.01/4,111.74 = 891.65/x
  3. Step 3: Cross multiply
    2,741.01x = 4,111.74 × 891.65
  4. Step 4: Simplify right side
    2,741.01x = 3,666,212.41
  5. Step 5: Solve for x
    x = 3,666,212.41/2,741.01
  6. Step 6: Final answer
    x = 1,337.54

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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.