Home / 1,384.25-2,076.47-410.36

Finding the Fourth Proportional to 1,384.25, 2,076.47 and 410.36

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Solution

The fourth proportional to 1,384.25, 2,076.47 and 410.36 is: 615.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,384.25 : 2,076.47 = 410.36 : x
  2. Step 2: Convert to fraction form
    1,384.25/2,076.47 = 410.36/x
  3. Step 3: Cross multiply
    1,384.25x = 2,076.47 × 410.36
  4. Step 4: Simplify right side
    1,384.25x = 852,087.80
  5. Step 5: Solve for x
    x = 852,087.80/1,384.25
  6. Step 6: Final answer
    x = 615.56

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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.