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Finding the Fourth Proportional to 8,985.61, 13,399.25 and 8,362.32

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Solution

The fourth proportional to 8,985.61, 13,399.25 and 8,362.32 is: 12,469.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.61 : 13,399.25 = 8,362.32 : x
  2. Step 2: Convert to fraction form
    8,985.61/13,399.25 = 8,362.32/x
  3. Step 3: Cross multiply
    8,985.61x = 13,399.25 × 8,362.32
  4. Step 4: Simplify right side
    8,985.61x = 112,048,816.26
  5. Step 5: Solve for x
    x = 112,048,816.26/8,985.61
  6. Step 6: Final answer
    x = 12,469.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.