Home / 2,861.78-4,292.94-1,130

Finding the Fourth Proportional to 2,861.78, 4,292.94 and 1,130

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Solution

The fourth proportional to 2,861.78, 4,292.94 and 1,130 is: 1,695.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.78 : 4,292.94 = 1,130 : x
  2. Step 2: Convert to fraction form
    2,861.78/4,292.94 = 1,130/x
  3. Step 3: Cross multiply
    2,861.78x = 4,292.94 × 1,130
  4. Step 4: Simplify right side
    2,861.78x = 4,851,022.20
  5. Step 5: Solve for x
    x = 4,851,022.20/2,861.78
  6. Step 6: Final answer
    x = 1,695.11

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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.