Home / 7,980.69-11,011.68-4,623.31

Finding the Fourth Proportional to 7,980.69, 11,011.68 and 4,623.31

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Solution

The fourth proportional to 7,980.69, 11,011.68 and 4,623.31 is: 6,379.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.69 : 11,011.68 = 4,623.31 : x
  2. Step 2: Convert to fraction form
    7,980.69/11,011.68 = 4,623.31/x
  3. Step 3: Cross multiply
    7,980.69x = 11,011.68 × 4,623.31
  4. Step 4: Simplify right side
    7,980.69x = 50,910,410.26
  5. Step 5: Solve for x
    x = 50,910,410.26/7,980.69
  6. Step 6: Final answer
    x = 6,379.20

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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.