Home / 1,987.69-2,981.81-600.87

Finding the Fourth Proportional to 1,987.69, 2,981.81 and 600.87

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Solution

The fourth proportional to 1,987.69, 2,981.81 and 600.87 is: 901.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,987.69 : 2,981.81 = 600.87 : x
  2. Step 2: Convert to fraction form
    1,987.69/2,981.81 = 600.87/x
  3. Step 3: Cross multiply
    1,987.69x = 2,981.81 × 600.87
  4. Step 4: Simplify right side
    1,987.69x = 1,791,676.09
  5. Step 5: Solve for x
    x = 1,791,676.09/1,987.69
  6. Step 6: Final answer
    x = 901.39

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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.