Home / 2,775.19-3,830.40-1,831.15

Finding the Fourth Proportional to 2,775.19, 3,830.40 and 1,831.15

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Solution

The fourth proportional to 2,775.19, 3,830.40 and 1,831.15 is: 2,527.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.19 : 3,830.40 = 1,831.15 : x
  2. Step 2: Convert to fraction form
    2,775.19/3,830.40 = 1,831.15/x
  3. Step 3: Cross multiply
    2,775.19x = 3,830.40 × 1,831.15
  4. Step 4: Simplify right side
    2,775.19x = 7,014,036.96
  5. Step 5: Solve for x
    x = 7,014,036.96/2,775.19
  6. Step 6: Final answer
    x = 2,527.41

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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.