Home / 7,941.60-10,964.40-7,192.80

Finding the Fourth Proportional to 7,941.60, 10,964.40 and 7,192.80

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Solution

The fourth proportional to 7,941.60, 10,964.40 and 7,192.80 is: 9,930.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,941.60 : 10,964.40 = 7,192.80 : x
  2. Step 2: Convert to fraction form
    7,941.60/10,964.40 = 7,192.80/x
  3. Step 3: Cross multiply
    7,941.60x = 10,964.40 × 7,192.80
  4. Step 4: Simplify right side
    7,941.60x = 78,864,736.32
  5. Step 5: Solve for x
    x = 78,864,736.32/7,941.60
  6. Step 6: Final answer
    x = 9,930.59

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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.