Home / 1,449.96-2,000.29-890.38

Finding the Fourth Proportional to 1,449.96, 2,000.29 and 890.38

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Solution

The fourth proportional to 1,449.96, 2,000.29 and 890.38 is: 1,228.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449.96 : 2,000.29 = 890.38 : x
  2. Step 2: Convert to fraction form
    1,449.96/2,000.29 = 890.38/x
  3. Step 3: Cross multiply
    1,449.96x = 2,000.29 × 890.38
  4. Step 4: Simplify right side
    1,449.96x = 1,781,018.21
  5. Step 5: Solve for x
    x = 1,781,018.21/1,449.96
  6. Step 6: Final answer
    x = 1,228.32

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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.