Home / 9,303.79-12,831.80-6,120.35

Finding the Fourth Proportional to 9,303.79, 12,831.80 and 6,120.35

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Solution

The fourth proportional to 9,303.79, 12,831.80 and 6,120.35 is: 8,441.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,303.79 : 12,831.80 = 6,120.35 : x
  2. Step 2: Convert to fraction form
    9,303.79/12,831.80 = 6,120.35/x
  3. Step 3: Cross multiply
    9,303.79x = 12,831.80 × 6,120.35
  4. Step 4: Simplify right side
    9,303.79x = 78,535,076.53
  5. Step 5: Solve for x
    x = 78,535,076.53/9,303.79
  6. Step 6: Final answer
    x = 8,441.20

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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.