Home / 3,881.77-5,356.02-2,309.56

Finding the Fourth Proportional to 3,881.77, 5,356.02 and 2,309.56

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Solution

The fourth proportional to 3,881.77, 5,356.02 and 2,309.56 is: 3,186.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.77 : 5,356.02 = 2,309.56 : x
  2. Step 2: Convert to fraction form
    3,881.77/5,356.02 = 2,309.56/x
  3. Step 3: Cross multiply
    3,881.77x = 5,356.02 × 2,309.56
  4. Step 4: Simplify right side
    3,881.77x = 12,370,049.55
  5. Step 5: Solve for x
    x = 12,370,049.55/3,881.77
  6. Step 6: Final answer
    x = 3,186.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.