Home / 1,880.08-2,820.42-581.55

Finding the Fourth Proportional to 1,880.08, 2,820.42 and 581.55

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Solution

The fourth proportional to 1,880.08, 2,820.42 and 581.55 is: 872.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,880.08 : 2,820.42 = 581.55 : x
  2. Step 2: Convert to fraction form
    1,880.08/2,820.42 = 581.55/x
  3. Step 3: Cross multiply
    1,880.08x = 2,820.42 × 581.55
  4. Step 4: Simplify right side
    1,880.08x = 1,640,215.25
  5. Step 5: Solve for x
    x = 1,640,215.25/1,880.08
  6. Step 6: Final answer
    x = 872.42

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1.5x scale

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.