Home / 1,723.86-2,380.05-1,135.40

Finding the Fourth Proportional to 1,723.86, 2,380.05 and 1,135.40

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Solution

The fourth proportional to 1,723.86, 2,380.05 and 1,135.40 is: 1,567.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,723.86 : 2,380.05 = 1,135.40 : x
  2. Step 2: Convert to fraction form
    1,723.86/2,380.05 = 1,135.40/x
  3. Step 3: Cross multiply
    1,723.86x = 2,380.05 × 1,135.40
  4. Step 4: Simplify right side
    1,723.86x = 2,702,296.87
  5. Step 5: Solve for x
    x = 2,702,296.87/1,723.86
  6. Step 6: Final answer
    x = 1,567.58

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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.