Home / 7,887.40-11,831.28-2,956.12

Finding the Fourth Proportional to 7,887.40, 11,831.28 and 2,956.12

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Solution

The fourth proportional to 7,887.40, 11,831.28 and 2,956.12 is: 4,434.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,887.40 : 11,831.28 = 2,956.12 : x
  2. Step 2: Convert to fraction form
    7,887.40/11,831.28 = 2,956.12/x
  3. Step 3: Cross multiply
    7,887.40x = 11,831.28 × 2,956.12
  4. Step 4: Simplify right side
    7,887.40x = 34,974,683.43
  5. Step 5: Solve for x
    x = 34,974,683.43/7,887.40
  6. Step 6: Final answer
    x = 4,434.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.