Home / 1,329.26-1,831.41-974.57

Finding the Fourth Proportional to 1,329.26, 1,831.41 and 974.57

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Solution

The fourth proportional to 1,329.26, 1,831.41 and 974.57 is: 1,342.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329.26 : 1,831.41 = 974.57 : x
  2. Step 2: Convert to fraction form
    1,329.26/1,831.41 = 974.57/x
  3. Step 3: Cross multiply
    1,329.26x = 1,831.41 × 974.57
  4. Step 4: Simplify right side
    1,329.26x = 1,784,837.24
  5. Step 5: Solve for x
    x = 1,784,837.24/1,329.26
  6. Step 6: Final answer
    x = 1,342.73

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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.