Home / 6,776.80-10,165.20-5,113.60

Finding the Fourth Proportional to 6,776.80, 10,165.20 and 5,113.60

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Solution

The fourth proportional to 6,776.80, 10,165.20 and 5,113.60 is: 7,670.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,776.80 : 10,165.20 = 5,113.60 : x
  2. Step 2: Convert to fraction form
    6,776.80/10,165.20 = 5,113.60/x
  3. Step 3: Cross multiply
    6,776.80x = 10,165.20 × 5,113.60
  4. Step 4: Simplify right side
    6,776.80x = 51,980,766.72
  5. Step 5: Solve for x
    x = 51,980,766.72/6,776.80
  6. Step 6: Final answer
    x = 7,670.40

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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.