Home / 1,108.25-1,528.57-968.07

Finding the Fourth Proportional to 1,108.25, 1,528.57 and 968.07

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Solution

The fourth proportional to 1,108.25, 1,528.57 and 968.07 is: 1,335.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,108.25 : 1,528.57 = 968.07 : x
  2. Step 2: Convert to fraction form
    1,108.25/1,528.57 = 968.07/x
  3. Step 3: Cross multiply
    1,108.25x = 1,528.57 × 968.07
  4. Step 4: Simplify right side
    1,108.25x = 1,479,762.76
  5. Step 5: Solve for x
    x = 1,479,762.76/1,108.25
  6. Step 6: Final answer
    x = 1,335.22

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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.