Home / 7,910.40-10,918.60-4,766.78

Finding the Fourth Proportional to 7,910.40, 10,918.60 and 4,766.78

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Solution

The fourth proportional to 7,910.40, 10,918.60 and 4,766.78 is: 6,579.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,910.40 : 10,918.60 = 4,766.78 : x
  2. Step 2: Convert to fraction form
    7,910.40/10,918.60 = 4,766.78/x
  3. Step 3: Cross multiply
    7,910.40x = 10,918.60 × 4,766.78
  4. Step 4: Simplify right side
    7,910.40x = 52,046,564.11
  5. Step 5: Solve for x
    x = 52,046,564.11/7,910.40
  6. Step 6: Final answer
    x = 6,579.51

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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.