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Finding the Fourth Proportional to 8,856.99, 12,219.88 and 5,028

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Solution

The fourth proportional to 8,856.99, 12,219.88 and 5,028 is: 6,937.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,856.99 : 12,219.88 = 5,028 : x
  2. Step 2: Convert to fraction form
    8,856.99/12,219.88 = 5,028/x
  3. Step 3: Cross multiply
    8,856.99x = 12,219.88 × 5,028
  4. Step 4: Simplify right side
    8,856.99x = 61,441,556.64
  5. Step 5: Solve for x
    x = 61,441,556.64/8,856.99
  6. Step 6: Final answer
    x = 6,937.07

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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.