Home / 3,246.65-4,480.79-2,128.53

Finding the Fourth Proportional to 3,246.65, 4,480.79 and 2,128.53

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Solution

The fourth proportional to 3,246.65, 4,480.79 and 2,128.53 is: 2,937.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,246.65 : 4,480.79 = 2,128.53 : x
  2. Step 2: Convert to fraction form
    3,246.65/4,480.79 = 2,128.53/x
  3. Step 3: Cross multiply
    3,246.65x = 4,480.79 × 2,128.53
  4. Step 4: Simplify right side
    3,246.65x = 9,537,495.94
  5. Step 5: Solve for x
    x = 9,537,495.94/3,246.65
  6. Step 6: Final answer
    x = 2,937.64

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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.