Home / 7,778.90-11,639.19-4,318.58

Finding the Fourth Proportional to 7,778.90, 11,639.19 and 4,318.58

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Solution

The fourth proportional to 7,778.90, 11,639.19 and 4,318.58 is: 6,461.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,778.90 : 11,639.19 = 4,318.58 : x
  2. Step 2: Convert to fraction form
    7,778.90/11,639.19 = 4,318.58/x
  3. Step 3: Cross multiply
    7,778.90x = 11,639.19 × 4,318.58
  4. Step 4: Simplify right side
    7,778.90x = 50,264,773.15
  5. Step 5: Solve for x
    x = 50,264,773.15/7,778.90
  6. Step 6: Final answer
    x = 6,461.68

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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.