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Finding the Fourth Proportional to 8,394.90, 12,592.32 and 8,210.37

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Solution

The fourth proportional to 8,394.90, 12,592.32 and 8,210.37 is: 12,315.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,394.90 : 12,592.32 = 8,210.37 : x
  2. Step 2: Convert to fraction form
    8,394.90/12,592.32 = 8,210.37/x
  3. Step 3: Cross multiply
    8,394.90x = 12,592.32 × 8,210.37
  4. Step 4: Simplify right side
    8,394.90x = 103,387,606.36
  5. Step 5: Solve for x
    x = 103,387,606.36/8,394.90
  6. Step 6: Final answer
    x = 12,315.53

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1.5x scale

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.