Home / 8,385.29-12,558.78-4,005.81

Finding the Fourth Proportional to 8,385.29, 12,558.78 and 4,005.81

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Solution

The fourth proportional to 8,385.29, 12,558.78 and 4,005.81 is: 5,999.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,385.29 : 12,558.78 = 4,005.81 : x
  2. Step 2: Convert to fraction form
    8,385.29/12,558.78 = 4,005.81/x
  3. Step 3: Cross multiply
    8,385.29x = 12,558.78 × 4,005.81
  4. Step 4: Simplify right side
    8,385.29x = 50,308,086.51
  5. Step 5: Solve for x
    x = 50,308,086.51/8,385.29
  6. Step 6: Final answer
    x = 5,999.57

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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.