Home / 3,981.95-5,495.07-2,213.72

Finding the Fourth Proportional to 3,981.95, 5,495.07 and 2,213.72

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Solution

The fourth proportional to 3,981.95, 5,495.07 and 2,213.72 is: 3,054.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.95 : 5,495.07 = 2,213.72 : x
  2. Step 2: Convert to fraction form
    3,981.95/5,495.07 = 2,213.72/x
  3. Step 3: Cross multiply
    3,981.95x = 5,495.07 × 2,213.72
  4. Step 4: Simplify right side
    3,981.95x = 12,164,518.89
  5. Step 5: Solve for x
    x = 12,164,518.89/3,981.95
  6. Step 6: Final answer
    x = 3,054.92

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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.