Home / 5,415.40-8,104.20-3,225.70

Finding the Fourth Proportional to 5,415.40, 8,104.20 and 3,225.70

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Solution

The fourth proportional to 5,415.40, 8,104.20 and 3,225.70 is: 4,827.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.40 : 8,104.20 = 3,225.70 : x
  2. Step 2: Convert to fraction form
    5,415.40/8,104.20 = 3,225.70/x
  3. Step 3: Cross multiply
    5,415.40x = 8,104.20 × 3,225.70
  4. Step 4: Simplify right side
    5,415.40x = 26,141,717.94
  5. Step 5: Solve for x
    x = 26,141,717.94/5,415.40
  6. Step 6: Final answer
    x = 4,827.29

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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.