Home / 2,143.86-2,958.48-1,199.70

Finding the Fourth Proportional to 2,143.86, 2,958.48 and 1,199.70

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Solution

The fourth proportional to 2,143.86, 2,958.48 and 1,199.70 is: 1,655.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.86 : 2,958.48 = 1,199.70 : x
  2. Step 2: Convert to fraction form
    2,143.86/2,958.48 = 1,199.70/x
  3. Step 3: Cross multiply
    2,143.86x = 2,958.48 × 1,199.70
  4. Step 4: Simplify right side
    2,143.86x = 3,549,288.46
  5. Step 5: Solve for x
    x = 3,549,288.46/2,143.86
  6. Step 6: Final answer
    x = 1,655.56

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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.