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Finding the Fourth Proportional to 7,184.40, 10,788.90 and 3,903.90

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Solution

The fourth proportional to 7,184.40, 10,788.90 and 3,903.90 is: 5,862.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,184.40 : 10,788.90 = 3,903.90 : x
  2. Step 2: Convert to fraction form
    7,184.40/10,788.90 = 3,903.90/x
  3. Step 3: Cross multiply
    7,184.40x = 10,788.90 × 3,903.90
  4. Step 4: Simplify right side
    7,184.40x = 42,118,786.71
  5. Step 5: Solve for x
    x = 42,118,786.71/7,184.40
  6. Step 6: Final answer
    x = 5,862.53

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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.