Home / 3,102.69-4,275.95-2,108.01

Finding the Fourth Proportional to 3,102.69, 4,275.95 and 2,108.01

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Solution

The fourth proportional to 3,102.69, 4,275.95 and 2,108.01 is: 2,905.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,102.69 : 4,275.95 = 2,108.01 : x
  2. Step 2: Convert to fraction form
    3,102.69/4,275.95 = 2,108.01/x
  3. Step 3: Cross multiply
    3,102.69x = 4,275.95 × 2,108.01
  4. Step 4: Simplify right side
    3,102.69x = 9,013,734.82
  5. Step 5: Solve for x
    x = 9,013,734.82/3,102.69
  6. Step 6: Final answer
    x = 2,905.14

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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.