Home / 2,781.30-4,172.51-1,137.98

Finding the Fourth Proportional to 2,781.30, 4,172.51 and 1,137.98

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Solution

The fourth proportional to 2,781.30, 4,172.51 and 1,137.98 is: 1,707.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.30 : 4,172.51 = 1,137.98 : x
  2. Step 2: Convert to fraction form
    2,781.30/4,172.51 = 1,137.98/x
  3. Step 3: Cross multiply
    2,781.30x = 4,172.51 × 1,137.98
  4. Step 4: Simplify right side
    2,781.30x = 4,748,232.93
  5. Step 5: Solve for x
    x = 4,748,232.93/2,781.30
  6. Step 6: Final answer
    x = 1,707.20

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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.