Home / 1,327.50-1,831.32-934.74

Finding the Fourth Proportional to 1,327.50, 1,831.32 and 934.74

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Solution

The fourth proportional to 1,327.50, 1,831.32 and 934.74 is: 1,289.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327.50 : 1,831.32 = 934.74 : x
  2. Step 2: Convert to fraction form
    1,327.50/1,831.32 = 934.74/x
  3. Step 3: Cross multiply
    1,327.50x = 1,831.32 × 934.74
  4. Step 4: Simplify right side
    1,327.50x = 1,711,808.06
  5. Step 5: Solve for x
    x = 1,711,808.06/1,327.50
  6. Step 6: Final answer
    x = 1,289.50

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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.