Home / 7,890.24-11,830.76-3,212.50

Finding the Fourth Proportional to 7,890.24, 11,830.76 and 3,212.50

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Solution

The fourth proportional to 7,890.24, 11,830.76 and 3,212.50 is: 4,816.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.24 : 11,830.76 = 3,212.50 : x
  2. Step 2: Convert to fraction form
    7,890.24/11,830.76 = 3,212.50/x
  3. Step 3: Cross multiply
    7,890.24x = 11,830.76 × 3,212.50
  4. Step 4: Simplify right side
    7,890.24x = 38,006,316.50
  5. Step 5: Solve for x
    x = 38,006,316.50/7,890.24
  6. Step 6: Final answer
    x = 4,816.88

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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.