Home / 8,640.06-11,923.29-4,914.78

Finding the Fourth Proportional to 8,640.06, 11,923.29 and 4,914.78

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Solution

The fourth proportional to 8,640.06, 11,923.29 and 4,914.78 is: 6,782.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640.06 : 11,923.29 = 4,914.78 : x
  2. Step 2: Convert to fraction form
    8,640.06/11,923.29 = 4,914.78/x
  3. Step 3: Cross multiply
    8,640.06x = 11,923.29 × 4,914.78
  4. Step 4: Simplify right side
    8,640.06x = 58,600,358.60
  5. Step 5: Solve for x
    x = 58,600,358.60/8,640.06
  6. Step 6: Final answer
    x = 6,782.40

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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.