Home / 1,271.02-1,909.28-1,076.42

Finding the Fourth Proportional to 1,271.02, 1,909.28 and 1,076.42

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Solution

The fourth proportional to 1,271.02, 1,909.28 and 1,076.42 is: 1,616.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271.02 : 1,909.28 = 1,076.42 : x
  2. Step 2: Convert to fraction form
    1,271.02/1,909.28 = 1,076.42/x
  3. Step 3: Cross multiply
    1,271.02x = 1,909.28 × 1,076.42
  4. Step 4: Simplify right side
    1,271.02x = 2,055,187.18
  5. Step 5: Solve for x
    x = 2,055,187.18/1,271.02
  6. Step 6: Final answer
    x = 1,616.96

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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.