Home / 3,890.16-5,367.51-2,211.18

Finding the Fourth Proportional to 3,890.16, 5,367.51 and 2,211.18

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Solution

The fourth proportional to 3,890.16, 5,367.51 and 2,211.18 is: 3,050.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.16 : 5,367.51 = 2,211.18 : x
  2. Step 2: Convert to fraction form
    3,890.16/5,367.51 = 2,211.18/x
  3. Step 3: Cross multiply
    3,890.16x = 5,367.51 × 2,211.18
  4. Step 4: Simplify right side
    3,890.16x = 11,868,530.76
  5. Step 5: Solve for x
    x = 11,868,530.76/3,890.16
  6. Step 6: Final answer
    x = 3,050.91

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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.