Home / 1,989.01-2,983.29-508.23

Finding the Fourth Proportional to 1,989.01, 2,983.29 and 508.23

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Solution

The fourth proportional to 1,989.01, 2,983.29 and 508.23 is: 762.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.01 : 2,983.29 = 508.23 : x
  2. Step 2: Convert to fraction form
    1,989.01/2,983.29 = 508.23/x
  3. Step 3: Cross multiply
    1,989.01x = 2,983.29 × 508.23
  4. Step 4: Simplify right side
    1,989.01x = 1,516,182.56
  5. Step 5: Solve for x
    x = 1,516,182.56/1,989.01
  6. Step 6: Final answer
    x = 762.28

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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.