Home / 8,208.42-11,328.36-6,712.20

Finding the Fourth Proportional to 8,208.42, 11,328.36 and 6,712.20

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Solution

The fourth proportional to 8,208.42, 11,328.36 and 6,712.20 is: 9,263.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,208.42 : 11,328.36 = 6,712.20 : x
  2. Step 2: Convert to fraction form
    8,208.42/11,328.36 = 6,712.20/x
  3. Step 3: Cross multiply
    8,208.42x = 11,328.36 × 6,712.20
  4. Step 4: Simplify right side
    8,208.42x = 76,038,217.99
  5. Step 5: Solve for x
    x = 76,038,217.99/8,208.42
  6. Step 6: Final answer
    x = 9,263.44

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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.