Home / 2,891.26-3,989.93-1,564.95

Finding the Fourth Proportional to 2,891.26, 3,989.93 and 1,564.95

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Solution

The fourth proportional to 2,891.26, 3,989.93 and 1,564.95 is: 2,159.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.26 : 3,989.93 = 1,564.95 : x
  2. Step 2: Convert to fraction form
    2,891.26/3,989.93 = 1,564.95/x
  3. Step 3: Cross multiply
    2,891.26x = 3,989.93 × 1,564.95
  4. Step 4: Simplify right side
    2,891.26x = 6,244,040.95
  5. Step 5: Solve for x
    x = 6,244,040.95/2,891.26
  6. Step 6: Final answer
    x = 2,159.63

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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.