Home / 1,417.50-2,124.20-799.90

Finding the Fourth Proportional to 1,417.50, 2,124.20 and 799.90

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Solution

The fourth proportional to 1,417.50, 2,124.20 and 799.90 is: 1,198.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,417.50 : 2,124.20 = 799.90 : x
  2. Step 2: Convert to fraction form
    1,417.50/2,124.20 = 799.90/x
  3. Step 3: Cross multiply
    1,417.50x = 2,124.20 × 799.90
  4. Step 4: Simplify right side
    1,417.50x = 1,699,145.25
  5. Step 5: Solve for x
    x = 1,699,145.25/1,417.50
  6. Step 6: Final answer
    x = 1,198.69

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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.