Home / 2,781.90-4,172.88-2,293.74

Finding the Fourth Proportional to 2,781.90, 4,172.88 and 2,293.74

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Solution

The fourth proportional to 2,781.90, 4,172.88 and 2,293.74 is: 3,440.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.90 : 4,172.88 = 2,293.74 : x
  2. Step 2: Convert to fraction form
    2,781.90/4,172.88 = 2,293.74/x
  3. Step 3: Cross multiply
    2,781.90x = 4,172.88 × 2,293.74
  4. Step 4: Simplify right side
    2,781.90x = 9,571,501.77
  5. Step 5: Solve for x
    x = 9,571,501.77/2,781.90
  6. Step 6: Final answer
    x = 3,440.63

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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.