Home / 1,276.02-1,911.87-1,151.55

Finding the Fourth Proportional to 1,276.02, 1,911.87 and 1,151.55

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Solution

The fourth proportional to 1,276.02, 1,911.87 and 1,151.55 is: 1,725.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276.02 : 1,911.87 = 1,151.55 : x
  2. Step 2: Convert to fraction form
    1,276.02/1,911.87 = 1,151.55/x
  3. Step 3: Cross multiply
    1,276.02x = 1,911.87 × 1,151.55
  4. Step 4: Simplify right side
    1,276.02x = 2,201,613.90
  5. Step 5: Solve for x
    x = 2,201,613.90/1,276.02
  6. Step 6: Final answer
    x = 1,725.38

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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.