Home / 6,831.20-9,427.20-4,038.08

Finding the Fourth Proportional to 6,831.20, 9,427.20 and 4,038.08

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Solution

The fourth proportional to 6,831.20, 9,427.20 and 4,038.08 is: 5,572.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,831.20 : 9,427.20 = 4,038.08 : x
  2. Step 2: Convert to fraction form
    6,831.20/9,427.20 = 4,038.08/x
  3. Step 3: Cross multiply
    6,831.20x = 9,427.20 × 4,038.08
  4. Step 4: Simplify right side
    6,831.20x = 38,067,787.78
  5. Step 5: Solve for x
    x = 38,067,787.78/6,831.20
  6. Step 6: Final answer
    x = 5,572.64

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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.