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Finding the Fourth Proportional to 1,460.94, 2,015.89 and 831.26

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Solution

The fourth proportional to 1,460.94, 2,015.89 and 831.26 is: 1,147.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,460.94 : 2,015.89 = 831.26 : x
  2. Step 2: Convert to fraction form
    1,460.94/2,015.89 = 831.26/x
  3. Step 3: Cross multiply
    1,460.94x = 2,015.89 × 831.26
  4. Step 4: Simplify right side
    1,460.94x = 1,675,731.68
  5. Step 5: Solve for x
    x = 1,675,731.68/1,460.94
  6. Step 6: Final answer
    x = 1,147.03

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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.