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Finding the Fourth Proportional to 2,368, 3,553.36 and 1,272.40

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Solution

The fourth proportional to 2,368, 3,553.36 and 1,272.40 is: 1,909.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,368 : 3,553.36 = 1,272.40 : x
  2. Step 2: Convert to fraction form
    2,368/3,553.36 = 1,272.40/x
  3. Step 3: Cross multiply
    2,368x = 3,553.36 × 1,272.40
  4. Step 4: Simplify right side
    2,368x = 4,521,295.26
  5. Step 5: Solve for x
    x = 4,521,295.26/2,368
  6. Step 6: Final answer
    x = 1,909.33

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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.