Home / 8,280.36-11,411.94-6,712.20

Finding the Fourth Proportional to 8,280.36, 11,411.94 and 6,712.20

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Solution

The fourth proportional to 8,280.36, 11,411.94 and 6,712.20 is: 9,250.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,280.36 : 11,411.94 = 6,712.20 : x
  2. Step 2: Convert to fraction form
    8,280.36/11,411.94 = 6,712.20/x
  3. Step 3: Cross multiply
    8,280.36x = 11,411.94 × 6,712.20
  4. Step 4: Simplify right side
    8,280.36x = 76,599,223.67
  5. Step 5: Solve for x
    x = 76,599,223.67/8,280.36
  6. Step 6: Final answer
    x = 9,250.71

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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.