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Finding the Fourth Proportional to 9,329.47, 12,860.04 and 6,340.03

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Solution

The fourth proportional to 9,329.47, 12,860.04 and 6,340.03 is: 8,739.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,329.47 : 12,860.04 = 6,340.03 : x
  2. Step 2: Convert to fraction form
    9,329.47/12,860.04 = 6,340.03/x
  3. Step 3: Cross multiply
    9,329.47x = 12,860.04 × 6,340.03
  4. Step 4: Simplify right side
    9,329.47x = 81,533,039.40
  5. Step 5: Solve for x
    x = 81,533,039.40/9,329.47
  6. Step 6: Final answer
    x = 8,739.30

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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.