Home / 2,740.14-3,781.44-1,561.23

Finding the Fourth Proportional to 2,740.14, 3,781.44 and 1,561.23

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Solution

The fourth proportional to 2,740.14, 3,781.44 and 1,561.23 is: 2,154.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,740.14 : 3,781.44 = 1,561.23 : x
  2. Step 2: Convert to fraction form
    2,740.14/3,781.44 = 1,561.23/x
  3. Step 3: Cross multiply
    2,740.14x = 3,781.44 × 1,561.23
  4. Step 4: Simplify right side
    2,740.14x = 5,903,697.57
  5. Step 5: Solve for x
    x = 5,903,697.57/2,740.14
  6. Step 6: Final answer
    x = 2,154.52

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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.