Home / 3,400.20-5,100.36-1,319.98

Finding the Fourth Proportional to 3,400.20, 5,100.36 and 1,319.98

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Solution

The fourth proportional to 3,400.20, 5,100.36 and 1,319.98 is: 1,979.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,400.20 : 5,100.36 = 1,319.98 : x
  2. Step 2: Convert to fraction form
    3,400.20/5,100.36 = 1,319.98/x
  3. Step 3: Cross multiply
    3,400.20x = 5,100.36 × 1,319.98
  4. Step 4: Simplify right side
    3,400.20x = 6,732,373.19
  5. Step 5: Solve for x
    x = 6,732,373.19/3,400.20
  6. Step 6: Final answer
    x = 1,979.99

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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.