Home / 1,914.84-2,871.78-528.11

Finding the Fourth Proportional to 1,914.84, 2,871.78 and 528.11

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Solution

The fourth proportional to 1,914.84, 2,871.78 and 528.11 is: 792.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,914.84 : 2,871.78 = 528.11 : x
  2. Step 2: Convert to fraction form
    1,914.84/2,871.78 = 528.11/x
  3. Step 3: Cross multiply
    1,914.84x = 2,871.78 × 528.11
  4. Step 4: Simplify right side
    1,914.84x = 1,516,615.74
  5. Step 5: Solve for x
    x = 1,516,615.74/1,914.84
  6. Step 6: Final answer
    x = 792.03

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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.