Home / 8,305.47-12,459.93-3,920.54

Finding the Fourth Proportional to 8,305.47, 12,459.93 and 3,920.54

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Solution

The fourth proportional to 8,305.47, 12,459.93 and 3,920.54 is: 5,881.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,305.47 : 12,459.93 = 3,920.54 : x
  2. Step 2: Convert to fraction form
    8,305.47/12,459.93 = 3,920.54/x
  3. Step 3: Cross multiply
    8,305.47x = 12,459.93 × 3,920.54
  4. Step 4: Simplify right side
    8,305.47x = 48,849,576.96
  5. Step 5: Solve for x
    x = 48,849,576.96/8,305.47
  6. Step 6: Final answer
    x = 5,881.62

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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.