Home / 3,621.40-5,428.86-1,891.24

Finding the Fourth Proportional to 3,621.40, 5,428.86 and 1,891.24

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Solution

The fourth proportional to 3,621.40, 5,428.86 and 1,891.24 is: 2,835.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.40 : 5,428.86 = 1,891.24 : x
  2. Step 2: Convert to fraction form
    3,621.40/5,428.86 = 1,891.24/x
  3. Step 3: Cross multiply
    3,621.40x = 5,428.86 × 1,891.24
  4. Step 4: Simplify right side
    3,621.40x = 10,267,277.19
  5. Step 5: Solve for x
    x = 10,267,277.19/3,621.40
  6. Step 6: Final answer
    x = 2,835.17

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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.