Home / 1,316.41-1,974.63-392.06

Finding the Fourth Proportional to 1,316.41, 1,974.63 and 392.06

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Solution

The fourth proportional to 1,316.41, 1,974.63 and 392.06 is: 588.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316.41 : 1,974.63 = 392.06 : x
  2. Step 2: Convert to fraction form
    1,316.41/1,974.63 = 392.06/x
  3. Step 3: Cross multiply
    1,316.41x = 1,974.63 × 392.06
  4. Step 4: Simplify right side
    1,316.41x = 774,173.44
  5. Step 5: Solve for x
    x = 774,173.44/1,316.41
  6. Step 6: Final answer
    x = 588.09

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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.