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Finding the Fourth Proportional to 8,866.61, 13,303.95 and 3,320.38

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Solution

The fourth proportional to 8,866.61, 13,303.95 and 3,320.38 is: 4,982.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,866.61 : 13,303.95 = 3,320.38 : x
  2. Step 2: Convert to fraction form
    8,866.61/13,303.95 = 3,320.38/x
  3. Step 3: Cross multiply
    8,866.61x = 13,303.95 × 3,320.38
  4. Step 4: Simplify right side
    8,866.61x = 44,174,169.50
  5. Step 5: Solve for x
    x = 44,174,169.50/8,866.61
  6. Step 6: Final answer
    x = 4,982.08

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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.