Home / 3,886.41-5,363.11-2,117.98

Finding the Fourth Proportional to 3,886.41, 5,363.11 and 2,117.98

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Solution

The fourth proportional to 3,886.41, 5,363.11 and 2,117.98 is: 2,922.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.41 : 5,363.11 = 2,117.98 : x
  2. Step 2: Convert to fraction form
    3,886.41/5,363.11 = 2,117.98/x
  3. Step 3: Cross multiply
    3,886.41x = 5,363.11 × 2,117.98
  4. Step 4: Simplify right side
    3,886.41x = 11,358,959.72
  5. Step 5: Solve for x
    x = 11,358,959.72/3,886.41
  6. Step 6: Final answer
    x = 2,922.74

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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.