Home / 2,178.38-3,001.10-1,783.10

Finding the Fourth Proportional to 2,178.38, 3,001.10 and 1,783.10

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Solution

The fourth proportional to 2,178.38, 3,001.10 and 1,783.10 is: 2,456.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.38 : 3,001.10 = 1,783.10 : x
  2. Step 2: Convert to fraction form
    2,178.38/3,001.10 = 1,783.10/x
  3. Step 3: Cross multiply
    2,178.38x = 3,001.10 × 1,783.10
  4. Step 4: Simplify right side
    2,178.38x = 5,351,261.41
  5. Step 5: Solve for x
    x = 5,351,261.41/2,178.38
  6. Step 6: Final answer
    x = 2,456.53

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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.