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Finding the Fourth Proportional to 7,278, 10,919.04 and 2,347.92

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Solution

The fourth proportional to 7,278, 10,919.04 and 2,347.92 is: 3,522.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,278 : 10,919.04 = 2,347.92 : x
  2. Step 2: Convert to fraction form
    7,278/10,919.04 = 2,347.92/x
  3. Step 3: Cross multiply
    7,278x = 10,919.04 × 2,347.92
  4. Step 4: Simplify right side
    7,278x = 25,637,032.40
  5. Step 5: Solve for x
    x = 25,637,032.40/7,278
  6. Step 6: Final answer
    x = 3,522.54

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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.