Home / 1,308.94-1,966.14-1,113.88

Finding the Fourth Proportional to 1,308.94, 1,966.14 and 1,113.88

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Solution

The fourth proportional to 1,308.94, 1,966.14 and 1,113.88 is: 1,673.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.94 : 1,966.14 = 1,113.88 : x
  2. Step 2: Convert to fraction form
    1,308.94/1,966.14 = 1,113.88/x
  3. Step 3: Cross multiply
    1,308.94x = 1,966.14 × 1,113.88
  4. Step 4: Simplify right side
    1,308.94x = 2,190,044.02
  5. Step 5: Solve for x
    x = 2,190,044.02/1,308.94
  6. Step 6: Final answer
    x = 1,673.14

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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.