Home / 1,490.24-2,235.27-759.26

Finding the Fourth Proportional to 1,490.24, 2,235.27 and 759.26

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Solution

The fourth proportional to 1,490.24, 2,235.27 and 759.26 is: 1,138.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.24 : 2,235.27 = 759.26 : x
  2. Step 2: Convert to fraction form
    1,490.24/2,235.27 = 759.26/x
  3. Step 3: Cross multiply
    1,490.24x = 2,235.27 × 759.26
  4. Step 4: Simplify right side
    1,490.24x = 1,697,151.10
  5. Step 5: Solve for x
    x = 1,697,151.10/1,490.24
  6. Step 6: Final answer
    x = 1,138.84

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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.