Home / 1,490.47-2,236.46-1,127.49

Finding the Fourth Proportional to 1,490.47, 2,236.46 and 1,127.49

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Solution

The fourth proportional to 1,490.47, 2,236.46 and 1,127.49 is: 1,691.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.47 : 2,236.46 = 1,127.49 : x
  2. Step 2: Convert to fraction form
    1,490.47/2,236.46 = 1,127.49/x
  3. Step 3: Cross multiply
    1,490.47x = 2,236.46 × 1,127.49
  4. Step 4: Simplify right side
    1,490.47x = 2,521,578.60
  5. Step 5: Solve for x
    x = 2,521,578.60/1,490.47
  6. Step 6: Final answer
    x = 1,691.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.