Home / 2,116.73-2,921.90-1,330.63

Finding the Fourth Proportional to 2,116.73, 2,921.90 and 1,330.63

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Solution

The fourth proportional to 2,116.73, 2,921.90 and 1,330.63 is: 1,836.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.73 : 2,921.90 = 1,330.63 : x
  2. Step 2: Convert to fraction form
    2,116.73/2,921.90 = 1,330.63/x
  3. Step 3: Cross multiply
    2,116.73x = 2,921.90 × 1,330.63
  4. Step 4: Simplify right side
    2,116.73x = 3,887,953.84
  5. Step 5: Solve for x
    x = 3,887,953.84/2,116.73
  6. Step 6: Final answer
    x = 1,836.77

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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.