Home / 2,399.85-3,312.41-2,150.74

Finding the Fourth Proportional to 2,399.85, 3,312.41 and 2,150.74

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Solution

The fourth proportional to 2,399.85, 3,312.41 and 2,150.74 is: 2,968.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,399.85 : 3,312.41 = 2,150.74 : x
  2. Step 2: Convert to fraction form
    2,399.85/3,312.41 = 2,150.74/x
  3. Step 3: Cross multiply
    2,399.85x = 3,312.41 × 2,150.74
  4. Step 4: Simplify right side
    2,399.85x = 7,124,132.68
  5. Step 5: Solve for x
    x = 7,124,132.68/2,399.85
  6. Step 6: Final answer
    x = 2,968.57

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1.5x scale

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.