Home / 2,143.74-2,958.65-1,199.90

Finding the Fourth Proportional to 2,143.74, 2,958.65 and 1,199.90

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Solution

The fourth proportional to 2,143.74, 2,958.65 and 1,199.90 is: 1,656.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.74 : 2,958.65 = 1,199.90 : x
  2. Step 2: Convert to fraction form
    2,143.74/2,958.65 = 1,199.90/x
  3. Step 3: Cross multiply
    2,143.74x = 2,958.65 × 1,199.90
  4. Step 4: Simplify right side
    2,143.74x = 3,550,069.34
  5. Step 5: Solve for x
    x = 3,550,069.34/2,143.74
  6. Step 6: Final answer
    x = 1,656.01

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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.