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Finding the Fourth Proportional to 3,404.59, 4,698.18 and 1,988.37

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Solution

The fourth proportional to 3,404.59, 4,698.18 and 1,988.37 is: 2,743.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,404.59 : 4,698.18 = 1,988.37 : x
  2. Step 2: Convert to fraction form
    3,404.59/4,698.18 = 1,988.37/x
  3. Step 3: Cross multiply
    3,404.59x = 4,698.18 × 1,988.37
  4. Step 4: Simplify right side
    3,404.59x = 9,341,720.17
  5. Step 5: Solve for x
    x = 9,341,720.17/3,404.59
  6. Step 6: Final answer
    x = 2,743.86

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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.