Home / 3,157.79-4,357.70-1,831.71

Finding the Fourth Proportional to 3,157.79, 4,357.70 and 1,831.71

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Solution

The fourth proportional to 3,157.79, 4,357.70 and 1,831.71 is: 2,527.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,157.79 : 4,357.70 = 1,831.71 : x
  2. Step 2: Convert to fraction form
    3,157.79/4,357.70 = 1,831.71/x
  3. Step 3: Cross multiply
    3,157.79x = 4,357.70 × 1,831.71
  4. Step 4: Simplify right side
    3,157.79x = 7,982,056.72
  5. Step 5: Solve for x
    x = 7,982,056.72/3,157.79
  6. Step 6: Final answer
    x = 2,527.74

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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.