Home / 1,880.25-2,820.53-581.72

Finding the Fourth Proportional to 1,880.25, 2,820.53 and 581.72

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Solution

The fourth proportional to 1,880.25, 2,820.53 and 581.72 is: 872.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,880.25 : 2,820.53 = 581.72 : x
  2. Step 2: Convert to fraction form
    1,880.25/2,820.53 = 581.72/x
  3. Step 3: Cross multiply
    1,880.25x = 2,820.53 × 581.72
  4. Step 4: Simplify right side
    1,880.25x = 1,640,741.70
  5. Step 5: Solve for x
    x = 1,640,741.70/1,880.25
  6. Step 6: Final answer
    x = 872.62

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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.