Home / 5,408.81-8,108.40-2,124.19

Finding the Fourth Proportional to 5,408.81, 8,108.40 and 2,124.19

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Solution

The fourth proportional to 5,408.81, 8,108.40 and 2,124.19 is: 3,184.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,408.81 : 8,108.40 = 2,124.19 : x
  2. Step 2: Convert to fraction form
    5,408.81/8,108.40 = 2,124.19/x
  3. Step 3: Cross multiply
    5,408.81x = 8,108.40 × 2,124.19
  4. Step 4: Simplify right side
    5,408.81x = 17,223,800.30
  5. Step 5: Solve for x
    x = 17,223,800.30/5,408.81
  6. Step 6: Final answer
    x = 3,184.40

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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.