Home / 1,509.48-2,081.41-949.28

Finding the Fourth Proportional to 1,509.48, 2,081.41 and 949.28

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Solution

The fourth proportional to 1,509.48, 2,081.41 and 949.28 is: 1,308.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,509.48 : 2,081.41 = 949.28 : x
  2. Step 2: Convert to fraction form
    1,509.48/2,081.41 = 949.28/x
  3. Step 3: Cross multiply
    1,509.48x = 2,081.41 × 949.28
  4. Step 4: Simplify right side
    1,509.48x = 1,975,828.10
  5. Step 5: Solve for x
    x = 1,975,828.10/1,509.48
  6. Step 6: Final answer
    x = 1,308.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.