Home / 2,643.16-3,963.93-2,121.93

Finding the Fourth Proportional to 2,643.16, 3,963.93 and 2,121.93

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Solution

The fourth proportional to 2,643.16, 3,963.93 and 2,121.93 is: 3,182.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,643.16 : 3,963.93 = 2,121.93 : x
  2. Step 2: Convert to fraction form
    2,643.16/3,963.93 = 2,121.93/x
  3. Step 3: Cross multiply
    2,643.16x = 3,963.93 × 2,121.93
  4. Step 4: Simplify right side
    2,643.16x = 8,411,171.38
  5. Step 5: Solve for x
    x = 8,411,171.38/2,643.16
  6. Step 6: Final answer
    x = 3,182.24

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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.