Home / 2,880.77-3,975.08-1,621.62

Finding the Fourth Proportional to 2,880.77, 3,975.08 and 1,621.62

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Solution

The fourth proportional to 2,880.77, 3,975.08 and 1,621.62 is: 2,237.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,880.77 : 3,975.08 = 1,621.62 : x
  2. Step 2: Convert to fraction form
    2,880.77/3,975.08 = 1,621.62/x
  3. Step 3: Cross multiply
    2,880.77x = 3,975.08 × 1,621.62
  4. Step 4: Simplify right side
    2,880.77x = 6,446,061.12
  5. Step 5: Solve for x
    x = 6,446,061.12/2,880.77
  6. Step 6: Final answer
    x = 2,237.62

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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.