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Finding the Fourth Proportional to 3,347.58, 4,619.64 and 2,021.28

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Solution

The fourth proportional to 3,347.58, 4,619.64 and 2,021.28 is: 2,789.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,347.58 : 4,619.64 = 2,021.28 : x
  2. Step 2: Convert to fraction form
    3,347.58/4,619.64 = 2,021.28/x
  3. Step 3: Cross multiply
    3,347.58x = 4,619.64 × 2,021.28
  4. Step 4: Simplify right side
    3,347.58x = 9,337,585.94
  5. Step 5: Solve for x
    x = 9,337,585.94/3,347.58
  6. Step 6: Final answer
    x = 2,789.35

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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.