Home / 8,181.61-12,278.54-3,184.77

Finding the Fourth Proportional to 8,181.61, 12,278.54 and 3,184.77

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Solution

The fourth proportional to 8,181.61, 12,278.54 and 3,184.77 is: 4,779.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,181.61 : 12,278.54 = 3,184.77 : x
  2. Step 2: Convert to fraction form
    8,181.61/12,278.54 = 3,184.77/x
  3. Step 3: Cross multiply
    8,181.61x = 12,278.54 × 3,184.77
  4. Step 4: Simplify right side
    8,181.61x = 39,104,325.84
  5. Step 5: Solve for x
    x = 39,104,325.84/8,181.61
  6. Step 6: Final answer
    x = 4,779.54

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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.