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Finding the Fourth Proportional to 8,815.19, 13,220.15 and 4,652.98

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Solution

The fourth proportional to 8,815.19, 13,220.15 and 4,652.98 is: 6,978.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,815.19 : 13,220.15 = 4,652.98 : x
  2. Step 2: Convert to fraction form
    8,815.19/13,220.15 = 4,652.98/x
  3. Step 3: Cross multiply
    8,815.19x = 13,220.15 × 4,652.98
  4. Step 4: Simplify right side
    8,815.19x = 61,513,037.23
  5. Step 5: Solve for x
    x = 61,513,037.23/8,815.19
  6. Step 6: Final answer
    x = 6,978.08

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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.