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Finding the Fourth Proportional to 3,188.01, 4,780.18 and 1,890.39

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Solution

The fourth proportional to 3,188.01, 4,780.18 and 1,890.39 is: 2,834.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.01 : 4,780.18 = 1,890.39 : x
  2. Step 2: Convert to fraction form
    3,188.01/4,780.18 = 1,890.39/x
  3. Step 3: Cross multiply
    3,188.01x = 4,780.18 × 1,890.39
  4. Step 4: Simplify right side
    3,188.01x = 9,036,404.47
  5. Step 5: Solve for x
    x = 9,036,404.47/3,188.01
  6. Step 6: Final answer
    x = 2,834.50

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1.5x scale

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.