Home / 1,497.86-2,065.38-1,287.80

Finding the Fourth Proportional to 1,497.86, 2,065.38 and 1,287.80

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Solution

The fourth proportional to 1,497.86, 2,065.38 and 1,287.80 is: 1,775.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,497.86 : 2,065.38 = 1,287.80 : x
  2. Step 2: Convert to fraction form
    1,497.86/2,065.38 = 1,287.80/x
  3. Step 3: Cross multiply
    1,497.86x = 2,065.38 × 1,287.80
  4. Step 4: Simplify right side
    1,497.86x = 2,659,796.36
  5. Step 5: Solve for x
    x = 2,659,796.36/1,497.86
  6. Step 6: Final answer
    x = 1,775.73

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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.