Home / 1,666.11-2,299.91-1,003.53

Finding the Fourth Proportional to 1,666.11, 2,299.91 and 1,003.53

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Solution

The fourth proportional to 1,666.11, 2,299.91 and 1,003.53 is: 1,385.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,666.11 : 2,299.91 = 1,003.53 : x
  2. Step 2: Convert to fraction form
    1,666.11/2,299.91 = 1,003.53/x
  3. Step 3: Cross multiply
    1,666.11x = 2,299.91 × 1,003.53
  4. Step 4: Simplify right side
    1,666.11x = 2,308,023.66
  5. Step 5: Solve for x
    x = 2,308,023.66/1,666.11
  6. Step 6: Final answer
    x = 1,385.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.