Home / 2,106.17-2,905.26-1,318.85

Finding the Fourth Proportional to 2,106.17, 2,905.26 and 1,318.85

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Solution

The fourth proportional to 2,106.17, 2,905.26 and 1,318.85 is: 1,819.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,106.17 : 2,905.26 = 1,318.85 : x
  2. Step 2: Convert to fraction form
    2,106.17/2,905.26 = 1,318.85/x
  3. Step 3: Cross multiply
    2,106.17x = 2,905.26 × 1,318.85
  4. Step 4: Simplify right side
    2,106.17x = 3,831,602.15
  5. Step 5: Solve for x
    x = 3,831,602.15/2,106.17
  6. Step 6: Final answer
    x = 1,819.23

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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.