Home / 1,208.16-1,809.36-1,015.20

Finding the Fourth Proportional to 1,208.16, 1,809.36 and 1,015.20

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Solution

The fourth proportional to 1,208.16, 1,809.36 and 1,015.20 is: 1,520.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,208.16 : 1,809.36 = 1,015.20 : x
  2. Step 2: Convert to fraction form
    1,208.16/1,809.36 = 1,015.20/x
  3. Step 3: Cross multiply
    1,208.16x = 1,809.36 × 1,015.20
  4. Step 4: Simplify right side
    1,208.16x = 1,836,862.27
  5. Step 5: Solve for x
    x = 1,836,862.27/1,208.16
  6. Step 6: Final answer
    x = 1,520.38

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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.