Home / 3,157.16-4,356.90-1,831.66

Finding the Fourth Proportional to 3,157.16, 4,356.90 and 1,831.66

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Solution

The fourth proportional to 3,157.16, 4,356.90 and 1,831.66 is: 2,527.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,157.16 : 4,356.90 = 1,831.66 : x
  2. Step 2: Convert to fraction form
    3,157.16/4,356.90 = 1,831.66/x
  3. Step 3: Cross multiply
    3,157.16x = 4,356.90 × 1,831.66
  4. Step 4: Simplify right side
    3,157.16x = 7,980,359.45
  5. Step 5: Solve for x
    x = 7,980,359.45/3,157.16
  6. Step 6: Final answer
    x = 2,527.70

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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.