Home / 1,490.11-2,225.13-1,216.73

Finding the Fourth Proportional to 1,490.11, 2,225.13 and 1,216.73

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Solution

The fourth proportional to 1,490.11, 2,225.13 and 1,216.73 is: 1,816.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.11 : 2,225.13 = 1,216.73 : x
  2. Step 2: Convert to fraction form
    1,490.11/2,225.13 = 1,216.73/x
  3. Step 3: Cross multiply
    1,490.11x = 2,225.13 × 1,216.73
  4. Step 4: Simplify right side
    1,490.11x = 2,707,387.99
  5. Step 5: Solve for x
    x = 2,707,387.99/1,490.11
  6. Step 6: Final answer
    x = 1,816.91

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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.