Home / 2,628.87-3,626.82-1,509.40

Finding the Fourth Proportional to 2,628.87, 3,626.82 and 1,509.40

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Solution

The fourth proportional to 2,628.87, 3,626.82 and 1,509.40 is: 2,082.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,628.87 : 3,626.82 = 1,509.40 : x
  2. Step 2: Convert to fraction form
    2,628.87/3,626.82 = 1,509.40/x
  3. Step 3: Cross multiply
    2,628.87x = 3,626.82 × 1,509.40
  4. Step 4: Simplify right side
    2,628.87x = 5,474,322.11
  5. Step 5: Solve for x
    x = 5,474,322.11/2,628.87
  6. Step 6: Final answer
    x = 2,082.39

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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.