Home / 8,890.40-12,268.60-4,911.89

Finding the Fourth Proportional to 8,890.40, 12,268.60 and 4,911.89

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Solution

The fourth proportional to 8,890.40, 12,268.60 and 4,911.89 is: 6,778.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,890.40 : 12,268.60 = 4,911.89 : x
  2. Step 2: Convert to fraction form
    8,890.40/12,268.60 = 4,911.89/x
  3. Step 3: Cross multiply
    8,890.40x = 12,268.60 × 4,911.89
  4. Step 4: Simplify right side
    8,890.40x = 60,261,940.03
  5. Step 5: Solve for x
    x = 60,261,940.03/8,890.40
  6. Step 6: Final answer
    x = 6,778.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.