Home / 1,985.05-2,972.10-1,006.37

Finding the Fourth Proportional to 1,985.05, 2,972.10 and 1,006.37

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Solution

The fourth proportional to 1,985.05, 2,972.10 and 1,006.37 is: 1,506.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.05 : 2,972.10 = 1,006.37 : x
  2. Step 2: Convert to fraction form
    1,985.05/2,972.10 = 1,006.37/x
  3. Step 3: Cross multiply
    1,985.05x = 2,972.10 × 1,006.37
  4. Step 4: Simplify right side
    1,985.05x = 2,991,032.28
  5. Step 5: Solve for x
    x = 2,991,032.28/1,985.05
  6. Step 6: Final answer
    x = 1,506.78

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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.