Home / 2,880.74-3,975.74-1,621.83

Finding the Fourth Proportional to 2,880.74, 3,975.74 and 1,621.83

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Solution

The fourth proportional to 2,880.74, 3,975.74 and 1,621.83 is: 2,238.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880.74 : 3,975.74 = 1,621.83 : x
  2. Step 2: Convert to fraction form
    2,880.74/3,975.74 = 1,621.83/x
  3. Step 3: Cross multiply
    2,880.74x = 3,975.74 × 1,621.83
  4. Step 4: Simplify right side
    2,880.74x = 6,447,966.30
  5. Step 5: Solve for x
    x = 6,447,966.30/2,880.74
  6. Step 6: Final answer
    x = 2,238.31

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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.