Home / 7,979.98-11,011.90-4,622.56

Finding the Fourth Proportional to 7,979.98, 11,011.90 and 4,622.56

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Solution

The fourth proportional to 7,979.98, 11,011.90 and 4,622.56 is: 6,378.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.98 : 11,011.90 = 4,622.56 : x
  2. Step 2: Convert to fraction form
    7,979.98/11,011.90 = 4,622.56/x
  3. Step 3: Cross multiply
    7,979.98x = 11,011.90 × 4,622.56
  4. Step 4: Simplify right side
    7,979.98x = 50,903,168.46
  5. Step 5: Solve for x
    x = 50,903,168.46/7,979.98
  6. Step 6: Final answer
    x = 6,378.86

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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.