Home / 6,938.36-10,407.60-2,778.72

Finding the Fourth Proportional to 6,938.36, 10,407.60 and 2,778.72

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Solution

The fourth proportional to 6,938.36, 10,407.60 and 2,778.72 is: 4,168.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,938.36 : 10,407.60 = 2,778.72 : x
  2. Step 2: Convert to fraction form
    6,938.36/10,407.60 = 2,778.72/x
  3. Step 3: Cross multiply
    6,938.36x = 10,407.60 × 2,778.72
  4. Step 4: Simplify right side
    6,938.36x = 28,919,806.27
  5. Step 5: Solve for x
    x = 28,919,806.27/6,938.36
  6. Step 6: Final answer
    x = 4,168.10

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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.