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Finding the Fourth Proportional to 3,599.91, 5,399.91 and 1,259.91

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Solution

The fourth proportional to 3,599.91, 5,399.91 and 1,259.91 is: 1,889.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,599.91 : 5,399.91 = 1,259.91 : x
  2. Step 2: Convert to fraction form
    3,599.91/5,399.91 = 1,259.91/x
  3. Step 3: Cross multiply
    3,599.91x = 5,399.91 × 1,259.91
  4. Step 4: Simplify right side
    3,599.91x = 6,803,400.61
  5. Step 5: Solve for x
    x = 6,803,400.61/3,599.91
  6. Step 6: Final answer
    x = 1,889.88

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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.