Home / 2,102.61-2,901.06-1,217.88

Finding the Fourth Proportional to 2,102.61, 2,901.06 and 1,217.88

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Solution

The fourth proportional to 2,102.61, 2,901.06 and 1,217.88 is: 1,680.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,102.61 : 2,901.06 = 1,217.88 : x
  2. Step 2: Convert to fraction form
    2,102.61/2,901.06 = 1,217.88/x
  3. Step 3: Cross multiply
    2,102.61x = 2,901.06 × 1,217.88
  4. Step 4: Simplify right side
    2,102.61x = 3,533,142.95
  5. Step 5: Solve for x
    x = 3,533,142.95/2,102.61
  6. Step 6: Final answer
    x = 1,680.36

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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.