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Finding the Fourth Proportional to 8,770.50, 12,113.10 and 6,804.90

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Solution

The fourth proportional to 8,770.50, 12,113.10 and 6,804.90 is: 9,398.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,770.50 : 12,113.10 = 6,804.90 : x
  2. Step 2: Convert to fraction form
    8,770.50/12,113.10 = 6,804.90/x
  3. Step 3: Cross multiply
    8,770.50x = 12,113.10 × 6,804.90
  4. Step 4: Simplify right side
    8,770.50x = 82,428,434.19
  5. Step 5: Solve for x
    x = 82,428,434.19/8,770.50
  6. Step 6: Final answer
    x = 9,398.37

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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.