Home / 2,880.80-3,975.28-1,621.59

Finding the Fourth Proportional to 2,880.80, 3,975.28 and 1,621.59

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Solution

The fourth proportional to 2,880.80, 3,975.28 and 1,621.59 is: 2,237.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880.80 : 3,975.28 = 1,621.59 : x
  2. Step 2: Convert to fraction form
    2,880.80/3,975.28 = 1,621.59/x
  3. Step 3: Cross multiply
    2,880.80x = 3,975.28 × 1,621.59
  4. Step 4: Simplify right side
    2,880.80x = 6,446,255.33
  5. Step 5: Solve for x
    x = 6,446,255.33/2,880.80
  6. Step 6: Final answer
    x = 2,237.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.