Home / 7,508.80-11,209.68-6,401.60

Finding the Fourth Proportional to 7,508.80, 11,209.68 and 6,401.60

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Solution

The fourth proportional to 7,508.80, 11,209.68 and 6,401.60 is: 9,556.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,508.80 : 11,209.68 = 6,401.60 : x
  2. Step 2: Convert to fraction form
    7,508.80/11,209.68 = 6,401.60/x
  3. Step 3: Cross multiply
    7,508.80x = 11,209.68 × 6,401.60
  4. Step 4: Simplify right side
    7,508.80x = 71,759,887.49
  5. Step 5: Solve for x
    x = 71,759,887.49/7,508.80
  6. Step 6: Final answer
    x = 9,556.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.