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Finding the Fourth Proportional to 8,930.10, 12,321.10 and 5,573.45

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Solution

The fourth proportional to 8,930.10, 12,321.10 and 5,573.45 is: 7,689.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,930.10 : 12,321.10 = 5,573.45 : x
  2. Step 2: Convert to fraction form
    8,930.10/12,321.10 = 5,573.45/x
  3. Step 3: Cross multiply
    8,930.10x = 12,321.10 × 5,573.45
  4. Step 4: Simplify right side
    8,930.10x = 68,671,034.80
  5. Step 5: Solve for x
    x = 68,671,034.80/8,930.10
  6. Step 6: Final answer
    x = 7,689.84

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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.