Home / 7,979.47-11,011.20-4,622.05

Finding the Fourth Proportional to 7,979.47, 11,011.20 and 4,622.05

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Solution

The fourth proportional to 7,979.47, 11,011.20 and 4,622.05 is: 6,378.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.47 : 11,011.20 = 4,622.05 : x
  2. Step 2: Convert to fraction form
    7,979.47/11,011.20 = 4,622.05/x
  3. Step 3: Cross multiply
    7,979.47x = 11,011.20 × 4,622.05
  4. Step 4: Simplify right side
    7,979.47x = 50,894,316.96
  5. Step 5: Solve for x
    x = 50,894,316.96/7,979.47
  6. Step 6: Final answer
    x = 6,378.16

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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.