Home / 2,771.08-4,156.02-1,127.20

Finding the Fourth Proportional to 2,771.08, 4,156.02 and 1,127.20

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Solution

The fourth proportional to 2,771.08, 4,156.02 and 1,127.20 is: 1,690.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,771.08 : 4,156.02 = 1,127.20 : x
  2. Step 2: Convert to fraction form
    2,771.08/4,156.02 = 1,127.20/x
  3. Step 3: Cross multiply
    2,771.08x = 4,156.02 × 1,127.20
  4. Step 4: Simplify right side
    2,771.08x = 4,684,665.74
  5. Step 5: Solve for x
    x = 4,684,665.74/2,771.08
  6. Step 6: Final answer
    x = 1,690.56

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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.