Home / 2,775.21-3,830.43-1,831.17

Finding the Fourth Proportional to 2,775.21, 3,830.43 and 1,831.17

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Solution

The fourth proportional to 2,775.21, 3,830.43 and 1,831.17 is: 2,527.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.21 : 3,830.43 = 1,831.17 : x
  2. Step 2: Convert to fraction form
    2,775.21/3,830.43 = 1,831.17/x
  3. Step 3: Cross multiply
    2,775.21x = 3,830.43 × 1,831.17
  4. Step 4: Simplify right side
    2,775.21x = 7,014,168.50
  5. Step 5: Solve for x
    x = 7,014,168.50/2,775.21
  6. Step 6: Final answer
    x = 2,527.44

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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.