Home / 3,270.48-4,513.20-1,778.40

Finding the Fourth Proportional to 3,270.48, 4,513.20 and 1,778.40

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Solution

The fourth proportional to 3,270.48, 4,513.20 and 1,778.40 is: 2,454.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,270.48 : 4,513.20 = 1,778.40 : x
  2. Step 2: Convert to fraction form
    3,270.48/4,513.20 = 1,778.40/x
  3. Step 3: Cross multiply
    3,270.48x = 4,513.20 × 1,778.40
  4. Step 4: Simplify right side
    3,270.48x = 8,026,274.88
  5. Step 5: Solve for x
    x = 8,026,274.88/3,270.48
  6. Step 6: Final answer
    x = 2,454.16

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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.