Home / 2,918.31-4,026.55-1,871.79

Finding the Fourth Proportional to 2,918.31, 4,026.55 and 1,871.79

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Solution

The fourth proportional to 2,918.31, 4,026.55 and 1,871.79 is: 2,582.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,918.31 : 4,026.55 = 1,871.79 : x
  2. Step 2: Convert to fraction form
    2,918.31/4,026.55 = 1,871.79/x
  3. Step 3: Cross multiply
    2,918.31x = 4,026.55 × 1,871.79
  4. Step 4: Simplify right side
    2,918.31x = 7,536,856.02
  5. Step 5: Solve for x
    x = 7,536,856.02/2,918.31
  6. Step 6: Final answer
    x = 2,582.61

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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.