Home / 3,203.28-4,777.25-3,128.76

Finding the Fourth Proportional to 3,203.28, 4,777.25 and 3,128.76

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Solution

The fourth proportional to 3,203.28, 4,777.25 and 3,128.76 is: 4,666.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,203.28 : 4,777.25 = 3,128.76 : x
  2. Step 2: Convert to fraction form
    3,203.28/4,777.25 = 3,128.76/x
  3. Step 3: Cross multiply
    3,203.28x = 4,777.25 × 3,128.76
  4. Step 4: Simplify right side
    3,203.28x = 14,946,853.07
  5. Step 5: Solve for x
    x = 14,946,853.07/3,203.28
  6. Step 6: Final answer
    x = 4,666.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.