Home / 2,179.81-3,007.47-1,235.45

Finding the Fourth Proportional to 2,179.81, 3,007.47 and 1,235.45

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Solution

The fourth proportional to 2,179.81, 3,007.47 and 1,235.45 is: 1,704.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.81 : 3,007.47 = 1,235.45 : x
  2. Step 2: Convert to fraction form
    2,179.81/3,007.47 = 1,235.45/x
  3. Step 3: Cross multiply
    2,179.81x = 3,007.47 × 1,235.45
  4. Step 4: Simplify right side
    2,179.81x = 3,715,578.81
  5. Step 5: Solve for x
    x = 3,715,578.81/2,179.81
  6. Step 6: Final answer
    x = 1,704.54

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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.