Home / 3,168.09-4,370.63-2,120.49

Finding the Fourth Proportional to 3,168.09, 4,370.63 and 2,120.49

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Solution

The fourth proportional to 3,168.09, 4,370.63 and 2,120.49 is: 2,925.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,168.09 : 4,370.63 = 2,120.49 : x
  2. Step 2: Convert to fraction form
    3,168.09/4,370.63 = 2,120.49/x
  3. Step 3: Cross multiply
    3,168.09x = 4,370.63 × 2,120.49
  4. Step 4: Simplify right side
    3,168.09x = 9,267,866.61
  5. Step 5: Solve for x
    x = 9,267,866.61/3,168.09
  6. Step 6: Final answer
    x = 2,925.38

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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.