Home / 1,921.39-2,881.79-534.58

Finding the Fourth Proportional to 1,921.39, 2,881.79 and 534.58

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Solution

The fourth proportional to 1,921.39, 2,881.79 and 534.58 is: 801.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.39 : 2,881.79 = 534.58 : x
  2. Step 2: Convert to fraction form
    1,921.39/2,881.79 = 534.58/x
  3. Step 3: Cross multiply
    1,921.39x = 2,881.79 × 534.58
  4. Step 4: Simplify right side
    1,921.39x = 1,540,547.30
  5. Step 5: Solve for x
    x = 1,540,547.30/1,921.39
  6. Step 6: Final answer
    x = 801.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.