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Finding the Fourth Proportional to 3,624.66, 4,999.26 and 3,121.39

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Solution

The fourth proportional to 3,624.66, 4,999.26 and 3,121.39 is: 4,305.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,624.66 : 4,999.26 = 3,121.39 : x
  2. Step 2: Convert to fraction form
    3,624.66/4,999.26 = 3,121.39/x
  3. Step 3: Cross multiply
    3,624.66x = 4,999.26 × 3,121.39
  4. Step 4: Simplify right side
    3,624.66x = 15,604,615.18
  5. Step 5: Solve for x
    x = 15,604,615.18/3,624.66
  6. Step 6: Final answer
    x = 4,305.13

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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.