Home / 2,741.40-3,781.58-1,621.80

Finding the Fourth Proportional to 2,741.40, 3,781.58 and 1,621.80

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Solution

The fourth proportional to 2,741.40, 3,781.58 and 1,621.80 is: 2,237.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,741.40 : 3,781.58 = 1,621.80 : x
  2. Step 2: Convert to fraction form
    2,741.40/3,781.58 = 1,621.80/x
  3. Step 3: Cross multiply
    2,741.40x = 3,781.58 × 1,621.80
  4. Step 4: Simplify right side
    2,741.40x = 6,132,966.44
  5. Step 5: Solve for x
    x = 6,132,966.44/2,741.40
  6. Step 6: Final answer
    x = 2,237.17

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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.