Home / 8,815.98-12,168.09-5,666.70

Finding the Fourth Proportional to 8,815.98, 12,168.09 and 5,666.70

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Solution

The fourth proportional to 8,815.98, 12,168.09 and 5,666.70 is: 7,821.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,815.98 : 12,168.09 = 5,666.70 : x
  2. Step 2: Convert to fraction form
    8,815.98/12,168.09 = 5,666.70/x
  3. Step 3: Cross multiply
    8,815.98x = 12,168.09 × 5,666.70
  4. Step 4: Simplify right side
    8,815.98x = 68,952,915.60
  5. Step 5: Solve for x
    x = 68,952,915.60/8,815.98
  6. Step 6: Final answer
    x = 7,821.36

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1.5x scale

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.