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Finding the Fourth Proportional to 9,393.99, 12,963.90 and 5,809.47

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Solution

The fourth proportional to 9,393.99, 12,963.90 and 5,809.47 is: 8,017.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,393.99 : 12,963.90 = 5,809.47 : x
  2. Step 2: Convert to fraction form
    9,393.99/12,963.90 = 5,809.47/x
  3. Step 3: Cross multiply
    9,393.99x = 12,963.90 × 5,809.47
  4. Step 4: Simplify right side
    9,393.99x = 75,313,388.13
  5. Step 5: Solve for x
    x = 75,313,388.13/9,393.99
  6. Step 6: Final answer
    x = 8,017.19

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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.