Home / 8,185.81-12,278.64-3,501.85

Finding the Fourth Proportional to 8,185.81, 12,278.64 and 3,501.85

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Solution

The fourth proportional to 8,185.81, 12,278.64 and 3,501.85 is: 5,252.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,185.81 : 12,278.64 = 3,501.85 : x
  2. Step 2: Convert to fraction form
    8,185.81/12,278.64 = 3,501.85/x
  3. Step 3: Cross multiply
    8,185.81x = 12,278.64 × 3,501.85
  4. Step 4: Simplify right side
    8,185.81x = 42,997,955.48
  5. Step 5: Solve for x
    x = 42,997,955.48/8,185.81
  6. Step 6: Final answer
    x = 5,252.74

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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.