Home / 5,347.60-8,021.40-3,408.40

Finding the Fourth Proportional to 5,347.60, 8,021.40 and 3,408.40

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Solution

The fourth proportional to 5,347.60, 8,021.40 and 3,408.40 is: 5,112.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,347.60 : 8,021.40 = 3,408.40 : x
  2. Step 2: Convert to fraction form
    5,347.60/8,021.40 = 3,408.40/x
  3. Step 3: Cross multiply
    5,347.60x = 8,021.40 × 3,408.40
  4. Step 4: Simplify right side
    5,347.60x = 27,340,139.76
  5. Step 5: Solve for x
    x = 27,340,139.76/5,347.60
  6. Step 6: Final answer
    x = 5,112.60

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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.