Home / 2,117.63-2,921.35-1,371.84

Finding the Fourth Proportional to 2,117.63, 2,921.35 and 1,371.84

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Solution

The fourth proportional to 2,117.63, 2,921.35 and 1,371.84 is: 1,892.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,117.63 : 2,921.35 = 1,371.84 : x
  2. Step 2: Convert to fraction form
    2,117.63/2,921.35 = 1,371.84/x
  3. Step 3: Cross multiply
    2,117.63x = 2,921.35 × 1,371.84
  4. Step 4: Simplify right side
    2,117.63x = 4,007,630.37
  5. Step 5: Solve for x
    x = 4,007,630.37/2,117.63
  6. Step 6: Final answer
    x = 1,892.51

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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.