Home / 1,914.64-2,871.69-615.94

Finding the Fourth Proportional to 1,914.64, 2,871.69 and 615.94

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Solution

The fourth proportional to 1,914.64, 2,871.69 and 615.94 is: 923.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,914.64 : 2,871.69 = 615.94 : x
  2. Step 2: Convert to fraction form
    1,914.64/2,871.69 = 615.94/x
  3. Step 3: Cross multiply
    1,914.64x = 2,871.69 × 615.94
  4. Step 4: Simplify right side
    1,914.64x = 1,768,788.74
  5. Step 5: Solve for x
    x = 1,768,788.74/1,914.64
  6. Step 6: Final answer
    x = 923.82

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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.