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Finding the Fourth Proportional to 6,394.40, 8,821.14 and 5,508.66

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Solution

The fourth proportional to 6,394.40, 8,821.14 and 5,508.66 is: 7,599.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,394.40 : 8,821.14 = 5,508.66 : x
  2. Step 2: Convert to fraction form
    6,394.40/8,821.14 = 5,508.66/x
  3. Step 3: Cross multiply
    6,394.40x = 8,821.14 × 5,508.66
  4. Step 4: Simplify right side
    6,394.40x = 48,592,661.07
  5. Step 5: Solve for x
    x = 48,592,661.07/6,394.40
  6. Step 6: Final answer
    x = 7,599.26

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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.