Home / 2,919.15-4,027.40-1,871.79

Finding the Fourth Proportional to 2,919.15, 4,027.40 and 1,871.79

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Solution

The fourth proportional to 2,919.15, 4,027.40 and 1,871.79 is: 2,582.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.15 : 4,027.40 = 1,871.79 : x
  2. Step 2: Convert to fraction form
    2,919.15/4,027.40 = 1,871.79/x
  3. Step 3: Cross multiply
    2,919.15x = 4,027.40 × 1,871.79
  4. Step 4: Simplify right side
    2,919.15x = 7,538,437.69
  5. Step 5: Solve for x
    x = 7,538,437.69/2,919.15
  6. Step 6: Final answer
    x = 2,582.41

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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.