Home / 1,490.98-2,226.29-1,272.28

Finding the Fourth Proportional to 1,490.98, 2,226.29 and 1,272.28

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Solution

The fourth proportional to 1,490.98, 2,226.29 and 1,272.28 is: 1,899.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.98 : 2,226.29 = 1,272.28 : x
  2. Step 2: Convert to fraction form
    1,490.98/2,226.29 = 1,272.28/x
  3. Step 3: Cross multiply
    1,490.98x = 2,226.29 × 1,272.28
  4. Step 4: Simplify right side
    1,490.98x = 2,832,464.24
  5. Step 5: Solve for x
    x = 2,832,464.24/1,490.98
  6. Step 6: Final answer
    x = 1,899.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.