Home / 1,225.76-1,839.60-576.16

Finding the Fourth Proportional to 1,225.76, 1,839.60 and 576.16

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Solution

The fourth proportional to 1,225.76, 1,839.60 and 576.16 is: 864.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,225.76 : 1,839.60 = 576.16 : x
  2. Step 2: Convert to fraction form
    1,225.76/1,839.60 = 576.16/x
  3. Step 3: Cross multiply
    1,225.76x = 1,839.60 × 576.16
  4. Step 4: Simplify right side
    1,225.76x = 1,059,903.94
  5. Step 5: Solve for x
    x = 1,059,903.94/1,225.76
  6. Step 6: Final answer
    x = 864.69

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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.