Home / 2,981.86-4,477.11-2,161.06

Finding the Fourth Proportional to 2,981.86, 4,477.11 and 2,161.06

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Solution

The fourth proportional to 2,981.86, 4,477.11 and 2,161.06 is: 3,244.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.86 : 4,477.11 = 2,161.06 : x
  2. Step 2: Convert to fraction form
    2,981.86/4,477.11 = 2,161.06/x
  3. Step 3: Cross multiply
    2,981.86x = 4,477.11 × 2,161.06
  4. Step 4: Simplify right side
    2,981.86x = 9,675,303.34
  5. Step 5: Solve for x
    x = 9,675,303.34/2,981.86
  6. Step 6: Final answer
    x = 3,244.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.