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Finding the Fourth Proportional to 4,019.88, 6,031.87 and 1,913.88

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Solution

The fourth proportional to 4,019.88, 6,031.87 and 1,913.88 is: 2,871.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,019.88 : 6,031.87 = 1,913.88 : x
  2. Step 2: Convert to fraction form
    4,019.88/6,031.87 = 1,913.88/x
  3. Step 3: Cross multiply
    4,019.88x = 6,031.87 × 1,913.88
  4. Step 4: Simplify right side
    4,019.88x = 11,544,300.37
  5. Step 5: Solve for x
    x = 11,544,300.37/4,019.88
  6. Step 6: Final answer
    x = 2,871.80

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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.