Home / 6,831.55-9,427.89-4,178.13

Finding the Fourth Proportional to 6,831.55, 9,427.89 and 4,178.13

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Solution

The fourth proportional to 6,831.55, 9,427.89 and 4,178.13 is: 5,766.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,831.55 : 9,427.89 = 4,178.13 : x
  2. Step 2: Convert to fraction form
    6,831.55/9,427.89 = 4,178.13/x
  3. Step 3: Cross multiply
    6,831.55x = 9,427.89 × 4,178.13
  4. Step 4: Simplify right side
    6,831.55x = 39,390,950.05
  5. Step 5: Solve for x
    x = 39,390,950.05/6,831.55
  6. Step 6: Final answer
    x = 5,766.03

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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.