Home / 3,886.29-5,363.19-2,117.93

Finding the Fourth Proportional to 3,886.29, 5,363.19 and 2,117.93

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Solution

The fourth proportional to 3,886.29, 5,363.19 and 2,117.93 is: 2,922.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,886.29 : 5,363.19 = 2,117.93 : x
  2. Step 2: Convert to fraction form
    3,886.29/5,363.19 = 2,117.93/x
  3. Step 3: Cross multiply
    3,886.29x = 5,363.19 × 2,117.93
  4. Step 4: Simplify right side
    3,886.29x = 11,358,834.18
  5. Step 5: Solve for x
    x = 11,358,834.18/3,886.29
  6. Step 6: Final answer
    x = 2,922.80

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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.