Home / 2,127.09-2,935.45-1,287.95

Finding the Fourth Proportional to 2,127.09, 2,935.45 and 1,287.95

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Solution

The fourth proportional to 2,127.09, 2,935.45 and 1,287.95 is: 1,777.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.09 : 2,935.45 = 1,287.95 : x
  2. Step 2: Convert to fraction form
    2,127.09/2,935.45 = 1,287.95/x
  3. Step 3: Cross multiply
    2,127.09x = 2,935.45 × 1,287.95
  4. Step 4: Simplify right side
    2,127.09x = 3,780,712.83
  5. Step 5: Solve for x
    x = 3,780,712.83/2,127.09
  6. Step 6: Final answer
    x = 1,777.41

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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.