Home / 7,809.58-11,715.46-3,191.50

Finding the Fourth Proportional to 7,809.58, 11,715.46 and 3,191.50

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Solution

The fourth proportional to 7,809.58, 11,715.46 and 3,191.50 is: 4,787.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,809.58 : 11,715.46 = 3,191.50 : x
  2. Step 2: Convert to fraction form
    7,809.58/11,715.46 = 3,191.50/x
  3. Step 3: Cross multiply
    7,809.58x = 11,715.46 × 3,191.50
  4. Step 4: Simplify right side
    7,809.58x = 37,389,890.59
  5. Step 5: Solve for x
    x = 37,389,890.59/7,809.58
  6. Step 6: Final answer
    x = 4,787.70

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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.