Home / 6,630.36-9,150.78-4,279.35

Finding the Fourth Proportional to 6,630.36, 9,150.78 and 4,279.35

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Solution

The fourth proportional to 6,630.36, 9,150.78 and 4,279.35 is: 5,906.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,630.36 : 9,150.78 = 4,279.35 : x
  2. Step 2: Convert to fraction form
    6,630.36/9,150.78 = 4,279.35/x
  3. Step 3: Cross multiply
    6,630.36x = 9,150.78 × 4,279.35
  4. Step 4: Simplify right side
    6,630.36x = 39,159,390.39
  5. Step 5: Solve for x
    x = 39,159,390.39/6,630.36
  6. Step 6: Final answer
    x = 5,906.07

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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.