Home / 1,948.32-2,688.67-1,249.69

Finding the Fourth Proportional to 1,948.32, 2,688.67 and 1,249.69

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Solution

The fourth proportional to 1,948.32, 2,688.67 and 1,249.69 is: 1,724.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.32 : 2,688.67 = 1,249.69 : x
  2. Step 2: Convert to fraction form
    1,948.32/2,688.67 = 1,249.69/x
  3. Step 3: Cross multiply
    1,948.32x = 2,688.67 × 1,249.69
  4. Step 4: Simplify right side
    1,948.32x = 3,360,004.01
  5. Step 5: Solve for x
    x = 3,360,004.01/1,948.32
  6. Step 6: Final answer
    x = 1,724.57

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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.