Home / 8,309.36-12,457.46-4,147.22

Finding the Fourth Proportional to 8,309.36, 12,457.46 and 4,147.22

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Solution

The fourth proportional to 8,309.36, 12,457.46 and 4,147.22 is: 6,217.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,309.36 : 12,457.46 = 4,147.22 : x
  2. Step 2: Convert to fraction form
    8,309.36/12,457.46 = 4,147.22/x
  3. Step 3: Cross multiply
    8,309.36x = 12,457.46 × 4,147.22
  4. Step 4: Simplify right side
    8,309.36x = 51,663,868.77
  5. Step 5: Solve for x
    x = 51,663,868.77/8,309.36
  6. Step 6: Final answer
    x = 6,217.55

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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.