Home / 2,102.94-2,901.98-1,218.66

Finding the Fourth Proportional to 2,102.94, 2,901.98 and 1,218.66

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Solution

The fourth proportional to 2,102.94, 2,901.98 and 1,218.66 is: 1,681.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,102.94 : 2,901.98 = 1,218.66 : x
  2. Step 2: Convert to fraction form
    2,102.94/2,901.98 = 1,218.66/x
  3. Step 3: Cross multiply
    2,102.94x = 2,901.98 × 1,218.66
  4. Step 4: Simplify right side
    2,102.94x = 3,536,526.95
  5. Step 5: Solve for x
    x = 3,536,526.95/2,102.94
  6. Step 6: Final answer
    x = 1,681.71

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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.