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Finding the Fourth Proportional to 1,326.91, 1,831.12 and 737.45

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Solution

The fourth proportional to 1,326.91, 1,831.12 and 737.45 is: 1,017.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326.91 : 1,831.12 = 737.45 : x
  2. Step 2: Convert to fraction form
    1,326.91/1,831.12 = 737.45/x
  3. Step 3: Cross multiply
    1,326.91x = 1,831.12 × 737.45
  4. Step 4: Simplify right side
    1,326.91x = 1,350,359.44
  5. Step 5: Solve for x
    x = 1,350,359.44/1,326.91
  6. Step 6: Final answer
    x = 1,017.67

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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.