Home / 2,178.33-3,007.65-1,340.16

Finding the Fourth Proportional to 2,178.33, 3,007.65 and 1,340.16

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Solution

The fourth proportional to 2,178.33, 3,007.65 and 1,340.16 is: 1,850.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.33 : 3,007.65 = 1,340.16 : x
  2. Step 2: Convert to fraction form
    2,178.33/3,007.65 = 1,340.16/x
  3. Step 3: Cross multiply
    2,178.33x = 3,007.65 × 1,340.16
  4. Step 4: Simplify right side
    2,178.33x = 4,030,732.22
  5. Step 5: Solve for x
    x = 4,030,732.22/2,178.33
  6. Step 6: Final answer
    x = 1,850.38

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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.