Home / 7,923.80-11,885.70-5,312.60

Finding the Fourth Proportional to 7,923.80, 11,885.70 and 5,312.60

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Solution

The fourth proportional to 7,923.80, 11,885.70 and 5,312.60 is: 7,968.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,923.80 : 11,885.70 = 5,312.60 : x
  2. Step 2: Convert to fraction form
    7,923.80/11,885.70 = 5,312.60/x
  3. Step 3: Cross multiply
    7,923.80x = 11,885.70 × 5,312.60
  4. Step 4: Simplify right side
    7,923.80x = 63,143,969.82
  5. Step 5: Solve for x
    x = 63,143,969.82/7,923.80
  6. Step 6: Final answer
    x = 7,968.90

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Similar ratio
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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.