Home / 8,698.20-11,999.79-5,867.40

Finding the Fourth Proportional to 8,698.20, 11,999.79 and 5,867.40

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Solution

The fourth proportional to 8,698.20, 11,999.79 and 5,867.40 is: 8,094.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,698.20 : 11,999.79 = 5,867.40 : x
  2. Step 2: Convert to fraction form
    8,698.20/11,999.79 = 5,867.40/x
  3. Step 3: Cross multiply
    8,698.20x = 11,999.79 × 5,867.40
  4. Step 4: Simplify right side
    8,698.20x = 70,407,567.85
  5. Step 5: Solve for x
    x = 70,407,567.85/8,698.20
  6. Step 6: Final answer
    x = 8,094.50

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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.