Home / 3,127.76-4,691.65-1,047.38

Finding the Fourth Proportional to 3,127.76, 4,691.65 and 1,047.38

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Solution

The fourth proportional to 3,127.76, 4,691.65 and 1,047.38 is: 1,571.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.76 : 4,691.65 = 1,047.38 : x
  2. Step 2: Convert to fraction form
    3,127.76/4,691.65 = 1,047.38/x
  3. Step 3: Cross multiply
    3,127.76x = 4,691.65 × 1,047.38
  4. Step 4: Simplify right side
    3,127.76x = 4,913,949.49
  5. Step 5: Solve for x
    x = 4,913,949.49/3,127.76
  6. Step 6: Final answer
    x = 1,571.08

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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.