Home / 3,931.94-5,426.85-2,254.47

Finding the Fourth Proportional to 3,931.94, 5,426.85 and 2,254.47

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Solution

The fourth proportional to 3,931.94, 5,426.85 and 2,254.47 is: 3,111.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,931.94 : 5,426.85 = 2,254.47 : x
  2. Step 2: Convert to fraction form
    3,931.94/5,426.85 = 2,254.47/x
  3. Step 3: Cross multiply
    3,931.94x = 5,426.85 × 2,254.47
  4. Step 4: Simplify right side
    3,931.94x = 12,234,659.25
  5. Step 5: Solve for x
    x = 12,234,659.25/3,931.94
  6. Step 6: Final answer
    x = 3,111.61

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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.