Home / 1,535.57-2,305.14-756.21

Finding the Fourth Proportional to 1,535.57, 2,305.14 and 756.21

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Solution

The fourth proportional to 1,535.57, 2,305.14 and 756.21 is: 1,135.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.57 : 2,305.14 = 756.21 : x
  2. Step 2: Convert to fraction form
    1,535.57/2,305.14 = 756.21/x
  3. Step 3: Cross multiply
    1,535.57x = 2,305.14 × 756.21
  4. Step 4: Simplify right side
    1,535.57x = 1,743,167.08
  5. Step 5: Solve for x
    x = 1,743,167.08/1,535.57
  6. Step 6: Final answer
    x = 1,135.20

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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.