Home / 1,988.88-2,983.32-508.20

Finding the Fourth Proportional to 1,988.88, 2,983.32 and 508.20

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Solution

The fourth proportional to 1,988.88, 2,983.32 and 508.20 is: 762.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.88 : 2,983.32 = 508.20 : x
  2. Step 2: Convert to fraction form
    1,988.88/2,983.32 = 508.20/x
  3. Step 3: Cross multiply
    1,988.88x = 2,983.32 × 508.20
  4. Step 4: Simplify right side
    1,988.88x = 1,516,123.22
  5. Step 5: Solve for x
    x = 1,516,123.22/1,988.88
  6. Step 6: Final answer
    x = 762.30

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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.