Home / 6,861.20-10,291.80-4,269.20

Finding the Fourth Proportional to 6,861.20, 10,291.80 and 4,269.20

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Solution

The fourth proportional to 6,861.20, 10,291.80 and 4,269.20 is: 6,403.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,861.20 : 10,291.80 = 4,269.20 : x
  2. Step 2: Convert to fraction form
    6,861.20/10,291.80 = 4,269.20/x
  3. Step 3: Cross multiply
    6,861.20x = 10,291.80 × 4,269.20
  4. Step 4: Simplify right side
    6,861.20x = 43,937,752.56
  5. Step 5: Solve for x
    x = 43,937,752.56/6,861.20
  6. Step 6: Final answer
    x = 6,403.80

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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.