Home / 7,912.20-11,870.10-4,623.60

Finding the Fourth Proportional to 7,912.20, 11,870.10 and 4,623.60

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Solution

The fourth proportional to 7,912.20, 11,870.10 and 4,623.60 is: 6,936.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,912.20 : 11,870.10 = 4,623.60 : x
  2. Step 2: Convert to fraction form
    7,912.20/11,870.10 = 4,623.60/x
  3. Step 3: Cross multiply
    7,912.20x = 11,870.10 × 4,623.60
  4. Step 4: Simplify right side
    7,912.20x = 54,882,594.36
  5. Step 5: Solve for x
    x = 54,882,594.36/7,912.20
  6. Step 6: Final answer
    x = 6,936.45

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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.