Home / 2,981.13-4,111.66-1,859.98

Finding the Fourth Proportional to 2,981.13, 4,111.66 and 1,859.98

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Solution

The fourth proportional to 2,981.13, 4,111.66 and 1,859.98 is: 2,565.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.13 : 4,111.66 = 1,859.98 : x
  2. Step 2: Convert to fraction form
    2,981.13/4,111.66 = 1,859.98/x
  3. Step 3: Cross multiply
    2,981.13x = 4,111.66 × 1,859.98
  4. Step 4: Simplify right side
    2,981.13x = 7,647,605.37
  5. Step 5: Solve for x
    x = 7,647,605.37/2,981.13
  6. Step 6: Final answer
    x = 2,565.34

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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.