Home / 1,973.40-2,721.78-1,186.62

Finding the Fourth Proportional to 1,973.40, 2,721.78 and 1,186.62

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Solution

The fourth proportional to 1,973.40, 2,721.78 and 1,186.62 is: 1,636.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,973.40 : 2,721.78 = 1,186.62 : x
  2. Step 2: Convert to fraction form
    1,973.40/2,721.78 = 1,186.62/x
  3. Step 3: Cross multiply
    1,973.40x = 2,721.78 × 1,186.62
  4. Step 4: Simplify right side
    1,973.40x = 3,229,718.58
  5. Step 5: Solve for x
    x = 3,229,718.58/1,973.40
  6. Step 6: Final answer
    x = 1,636.63

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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.