Home / 2,621.87-3,619.37-1,866.14

Finding the Fourth Proportional to 2,621.87, 3,619.37 and 1,866.14

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Solution

The fourth proportional to 2,621.87, 3,619.37 and 1,866.14 is: 2,576.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,621.87 : 3,619.37 = 1,866.14 : x
  2. Step 2: Convert to fraction form
    2,621.87/3,619.37 = 1,866.14/x
  3. Step 3: Cross multiply
    2,621.87x = 3,619.37 × 1,866.14
  4. Step 4: Simplify right side
    2,621.87x = 6,754,241.80
  5. Step 5: Solve for x
    x = 6,754,241.80/2,621.87
  6. Step 6: Final answer
    x = 2,576.12

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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.