Home / 2,399.45-3,312.77-1,958.40

Finding the Fourth Proportional to 2,399.45, 3,312.77 and 1,958.40

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Solution

The fourth proportional to 2,399.45, 3,312.77 and 1,958.40 is: 2,703.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,399.45 : 3,312.77 = 1,958.40 : x
  2. Step 2: Convert to fraction form
    2,399.45/3,312.77 = 1,958.40/x
  3. Step 3: Cross multiply
    2,399.45x = 3,312.77 × 1,958.40
  4. Step 4: Simplify right side
    2,399.45x = 6,487,718.98
  5. Step 5: Solve for x
    x = 6,487,718.98/2,399.45
  6. Step 6: Final answer
    x = 2,703.84

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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.