Home / 8,220.30-12,341.85-4,220.52

Finding the Fourth Proportional to 8,220.30, 12,341.85 and 4,220.52

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Solution

The fourth proportional to 8,220.30, 12,341.85 and 4,220.52 is: 6,336.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,220.30 : 12,341.85 = 4,220.52 : x
  2. Step 2: Convert to fraction form
    8,220.30/12,341.85 = 4,220.52/x
  3. Step 3: Cross multiply
    8,220.30x = 12,341.85 × 4,220.52
  4. Step 4: Simplify right side
    8,220.30x = 52,089,024.76
  5. Step 5: Solve for x
    x = 52,089,024.76/8,220.30
  6. Step 6: Final answer
    x = 6,336.63

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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.