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Finding the Fourth Proportional to 3,336.48, 5,001.48 and 1,390.32

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Solution

The fourth proportional to 3,336.48, 5,001.48 and 1,390.32 is: 2,084.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,336.48 : 5,001.48 = 1,390.32 : x
  2. Step 2: Convert to fraction form
    3,336.48/5,001.48 = 1,390.32/x
  3. Step 3: Cross multiply
    3,336.48x = 5,001.48 × 1,390.32
  4. Step 4: Simplify right side
    3,336.48x = 6,953,657.67
  5. Step 5: Solve for x
    x = 6,953,657.67/3,336.48
  6. Step 6: Final answer
    x = 2,084.13

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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.