Home / 2,981.57-4,113.74-1,863.65

Finding the Fourth Proportional to 2,981.57, 4,113.74 and 1,863.65

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Solution

The fourth proportional to 2,981.57, 4,113.74 and 1,863.65 is: 2,571.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.57 : 4,113.74 = 1,863.65 : x
  2. Step 2: Convert to fraction form
    2,981.57/4,113.74 = 1,863.65/x
  3. Step 3: Cross multiply
    2,981.57x = 4,113.74 × 1,863.65
  4. Step 4: Simplify right side
    2,981.57x = 7,666,541.66
  5. Step 5: Solve for x
    x = 7,666,541.66/2,981.57
  6. Step 6: Final answer
    x = 2,571.31

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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.