Home / 4,220.77-6,330.96-1,447.69

Finding the Fourth Proportional to 4,220.77, 6,330.96 and 1,447.69

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Solution

The fourth proportional to 4,220.77, 6,330.96 and 1,447.69 is: 2,171.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,220.77 : 6,330.96 = 1,447.69 : x
  2. Step 2: Convert to fraction form
    4,220.77/6,330.96 = 1,447.69/x
  3. Step 3: Cross multiply
    4,220.77x = 6,330.96 × 1,447.69
  4. Step 4: Simplify right side
    4,220.77x = 9,165,267.48
  5. Step 5: Solve for x
    x = 9,165,267.48/4,220.77
  6. Step 6: Final answer
    x = 2,171.47

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Half scale
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Double scale
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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.