Home / 1,490.09-2,223.87-1,451.21

Finding the Fourth Proportional to 1,490.09, 2,223.87 and 1,451.21

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Solution

The fourth proportional to 1,490.09, 2,223.87 and 1,451.21 is: 2,165.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.09 : 2,223.87 = 1,451.21 : x
  2. Step 2: Convert to fraction form
    1,490.09/2,223.87 = 1,451.21/x
  3. Step 3: Cross multiply
    1,490.09x = 2,223.87 × 1,451.21
  4. Step 4: Simplify right side
    1,490.09x = 3,227,285.82
  5. Step 5: Solve for x
    x = 3,227,285.82/1,490.09
  6. Step 6: Final answer
    x = 2,165.84

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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.