Home / 8,509.12-11,742.60-4,971.68

Finding the Fourth Proportional to 8,509.12, 11,742.60 and 4,971.68

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Solution

The fourth proportional to 8,509.12, 11,742.60 and 4,971.68 is: 6,860.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,509.12 : 11,742.60 = 4,971.68 : x
  2. Step 2: Convert to fraction form
    8,509.12/11,742.60 = 4,971.68/x
  3. Step 3: Cross multiply
    8,509.12x = 11,742.60 × 4,971.68
  4. Step 4: Simplify right side
    8,509.12x = 58,380,449.57
  5. Step 5: Solve for x
    x = 58,380,449.57/8,509.12
  6. Step 6: Final answer
    x = 6,860.93

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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.