Home / 2,021.23-2,790.66-1,490.17

Finding the Fourth Proportional to 2,021.23, 2,790.66 and 1,490.17

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Solution

The fourth proportional to 2,021.23, 2,790.66 and 1,490.17 is: 2,057.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.23 : 2,790.66 = 1,490.17 : x
  2. Step 2: Convert to fraction form
    2,021.23/2,790.66 = 1,490.17/x
  3. Step 3: Cross multiply
    2,021.23x = 2,790.66 × 1,490.17
  4. Step 4: Simplify right side
    2,021.23x = 4,158,557.81
  5. Step 5: Solve for x
    x = 4,158,557.81/2,021.23
  6. Step 6: Final answer
    x = 2,057.44

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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.