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Finding the Fourth Proportional to 8,985.86, 13,478.15 and 3,362.46

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Solution

The fourth proportional to 8,985.86, 13,478.15 and 3,362.46 is: 5,043.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.86 : 13,478.15 = 3,362.46 : x
  2. Step 2: Convert to fraction form
    8,985.86/13,478.15 = 3,362.46/x
  3. Step 3: Cross multiply
    8,985.86x = 13,478.15 × 3,362.46
  4. Step 4: Simplify right side
    8,985.86x = 45,319,740.25
  5. Step 5: Solve for x
    x = 45,319,740.25/8,985.86
  6. Step 6: Final answer
    x = 5,043.45

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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.