Home / 3,335.40-5,004.90-1,387.80

Finding the Fourth Proportional to 3,335.40, 5,004.90 and 1,387.80

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Solution

The fourth proportional to 3,335.40, 5,004.90 and 1,387.80 is: 2,082.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,335.40 : 5,004.90 = 1,387.80 : x
  2. Step 2: Convert to fraction form
    3,335.40/5,004.90 = 1,387.80/x
  3. Step 3: Cross multiply
    3,335.40x = 5,004.90 × 1,387.80
  4. Step 4: Simplify right side
    3,335.40x = 6,945,800.22
  5. Step 5: Solve for x
    x = 6,945,800.22/3,335.40
  6. Step 6: Final answer
    x = 2,082.45

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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.