Home / 4,221.48-6,330.99-1,259.80

Finding the Fourth Proportional to 4,221.48, 6,330.99 and 1,259.80

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Solution

The fourth proportional to 4,221.48, 6,330.99 and 1,259.80 is: 1,889.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,221.48 : 6,330.99 = 1,259.80 : x
  2. Step 2: Convert to fraction form
    4,221.48/6,330.99 = 1,259.80/x
  3. Step 3: Cross multiply
    4,221.48x = 6,330.99 × 1,259.80
  4. Step 4: Simplify right side
    4,221.48x = 7,975,781.20
  5. Step 5: Solve for x
    x = 7,975,781.20/4,221.48
  6. Step 6: Final answer
    x = 1,889.33

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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.