Home / 1,327.45-1,831.70-738.11

Finding the Fourth Proportional to 1,327.45, 1,831.70 and 738.11

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Solution

The fourth proportional to 1,327.45, 1,831.70 and 738.11 is: 1,018.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327.45 : 1,831.70 = 738.11 : x
  2. Step 2: Convert to fraction form
    1,327.45/1,831.70 = 738.11/x
  3. Step 3: Cross multiply
    1,327.45x = 1,831.70 × 738.11
  4. Step 4: Simplify right side
    1,327.45x = 1,351,988.77
  5. Step 5: Solve for x
    x = 1,351,988.77/1,327.45
  6. Step 6: Final answer
    x = 1,018.49

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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.