Home / 1,222.08-1,831.32-572.64

Finding the Fourth Proportional to 1,222.08, 1,831.32 and 572.64

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Solution

The fourth proportional to 1,222.08, 1,831.32 and 572.64 is: 858.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222.08 : 1,831.32 = 572.64 : x
  2. Step 2: Convert to fraction form
    1,222.08/1,831.32 = 572.64/x
  3. Step 3: Cross multiply
    1,222.08x = 1,831.32 × 572.64
  4. Step 4: Simplify right side
    1,222.08x = 1,048,687.08
  5. Step 5: Solve for x
    x = 1,048,687.08/1,222.08
  6. Step 6: Final answer
    x = 858.12

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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.