Home / 1,868.32-2,802.64-481.65

Finding the Fourth Proportional to 1,868.32, 2,802.64 and 481.65

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Solution

The fourth proportional to 1,868.32, 2,802.64 and 481.65 is: 722.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.32 : 2,802.64 = 481.65 : x
  2. Step 2: Convert to fraction form
    1,868.32/2,802.64 = 481.65/x
  3. Step 3: Cross multiply
    1,868.32x = 2,802.64 × 481.65
  4. Step 4: Simplify right side
    1,868.32x = 1,349,883.12
  5. Step 5: Solve for x
    x = 1,349,883.12/1,868.32
  6. Step 6: Final answer
    x = 722.51

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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.