Home / 1,490.86-2,054.19-1,224.39

Finding the Fourth Proportional to 1,490.86, 2,054.19 and 1,224.39

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Solution

The fourth proportional to 1,490.86, 2,054.19 and 1,224.39 is: 1,687.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.86 : 2,054.19 = 1,224.39 : x
  2. Step 2: Convert to fraction form
    1,490.86/2,054.19 = 1,224.39/x
  3. Step 3: Cross multiply
    1,490.86x = 2,054.19 × 1,224.39
  4. Step 4: Simplify right side
    1,490.86x = 2,515,129.69
  5. Step 5: Solve for x
    x = 2,515,129.69/1,490.86
  6. Step 6: Final answer
    x = 1,687.03

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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.