Home / 2,329.42-3,212.87-1,690.45

Finding the Fourth Proportional to 2,329.42, 3,212.87 and 1,690.45

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Solution

The fourth proportional to 2,329.42, 3,212.87 and 1,690.45 is: 2,331.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,329.42 : 3,212.87 = 1,690.45 : x
  2. Step 2: Convert to fraction form
    2,329.42/3,212.87 = 1,690.45/x
  3. Step 3: Cross multiply
    2,329.42x = 3,212.87 × 1,690.45
  4. Step 4: Simplify right side
    2,329.42x = 5,431,192.29
  5. Step 5: Solve for x
    x = 5,431,192.29/2,329.42
  6. Step 6: Final answer
    x = 2,331.56

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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.