Home / 1,530.59-2,112.21-831.96

Finding the Fourth Proportional to 1,530.59, 2,112.21 and 831.96

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Solution

The fourth proportional to 1,530.59, 2,112.21 and 831.96 is: 1,148.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,530.59 : 2,112.21 = 831.96 : x
  2. Step 2: Convert to fraction form
    1,530.59/2,112.21 = 831.96/x
  3. Step 3: Cross multiply
    1,530.59x = 2,112.21 × 831.96
  4. Step 4: Simplify right side
    1,530.59x = 1,757,274.23
  5. Step 5: Solve for x
    x = 1,757,274.23/1,530.59
  6. Step 6: Final answer
    x = 1,148.11

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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.