Home / 1,914.72-2,871.44-615.84

Finding the Fourth Proportional to 1,914.72, 2,871.44 and 615.84

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Solution

The fourth proportional to 1,914.72, 2,871.44 and 615.84 is: 923.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,914.72 : 2,871.44 = 615.84 : x
  2. Step 2: Convert to fraction form
    1,914.72/2,871.44 = 615.84/x
  3. Step 3: Cross multiply
    1,914.72x = 2,871.44 × 615.84
  4. Step 4: Simplify right side
    1,914.72x = 1,768,347.61
  5. Step 5: Solve for x
    x = 1,768,347.61/1,914.72
  6. Step 6: Final answer
    x = 923.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.