Home / 7,764.40-10,720.04-5,968.72

Finding the Fourth Proportional to 7,764.40, 10,720.04 and 5,968.72

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Solution

The fourth proportional to 7,764.40, 10,720.04 and 5,968.72 is: 8,240.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,764.40 : 10,720.04 = 5,968.72 : x
  2. Step 2: Convert to fraction form
    7,764.40/10,720.04 = 5,968.72/x
  3. Step 3: Cross multiply
    7,764.40x = 10,720.04 × 5,968.72
  4. Step 4: Simplify right side
    7,764.40x = 63,984,917.15
  5. Step 5: Solve for x
    x = 63,984,917.15/7,764.40
  6. Step 6: Final answer
    x = 8,240.81

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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.