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Finding the Fourth Proportional to 2,782.69, 4,174.40 and 933.19

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Solution

The fourth proportional to 2,782.69, 4,174.40 and 933.19 is: 1,399.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,782.69 : 4,174.40 = 933.19 : x
  2. Step 2: Convert to fraction form
    2,782.69/4,174.40 = 933.19/x
  3. Step 3: Cross multiply
    2,782.69x = 4,174.40 × 933.19
  4. Step 4: Simplify right side
    2,782.69x = 3,895,503.67
  5. Step 5: Solve for x
    x = 3,895,503.67/2,782.69
  6. Step 6: Final answer
    x = 1,399.91

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1.5x scale

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.