Home / 2,981.09-4,109.99-2,565.90

Finding the Fourth Proportional to 2,981.09, 4,109.99 and 2,565.90

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Solution

The fourth proportional to 2,981.09, 4,109.99 and 2,565.90 is: 3,537.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.09 : 4,109.99 = 2,565.90 : x
  2. Step 2: Convert to fraction form
    2,981.09/4,109.99 = 2,565.90/x
  3. Step 3: Cross multiply
    2,981.09x = 4,109.99 × 2,565.90
  4. Step 4: Simplify right side
    2,981.09x = 10,545,810.51
  5. Step 5: Solve for x
    x = 10,545,810.51/2,981.09
  6. Step 6: Final answer
    x = 3,537.57

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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.