Home / 6,421.50-8,861.73-3,627.06

Finding the Fourth Proportional to 6,421.50, 8,861.73 and 3,627.06

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Solution

The fourth proportional to 6,421.50, 8,861.73 and 3,627.06 is: 5,005.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,421.50 : 8,861.73 = 3,627.06 : x
  2. Step 2: Convert to fraction form
    6,421.50/8,861.73 = 3,627.06/x
  3. Step 3: Cross multiply
    6,421.50x = 8,861.73 × 3,627.06
  4. Step 4: Simplify right side
    6,421.50x = 32,142,026.41
  5. Step 5: Solve for x
    x = 32,142,026.41/6,421.50
  6. Step 6: Final answer
    x = 5,005.38

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Half scale
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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.