Home / 3,328.40-4,987.20-2,777.60

Finding the Fourth Proportional to 3,328.40, 4,987.20 and 2,777.60

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Solution

The fourth proportional to 3,328.40, 4,987.20 and 2,777.60 is: 4,161.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,328.40 : 4,987.20 = 2,777.60 : x
  2. Step 2: Convert to fraction form
    3,328.40/4,987.20 = 2,777.60/x
  3. Step 3: Cross multiply
    3,328.40x = 4,987.20 × 2,777.60
  4. Step 4: Simplify right side
    3,328.40x = 13,852,446.72
  5. Step 5: Solve for x
    x = 13,852,446.72/3,328.40
  6. Step 6: Final answer
    x = 4,161.89

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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.