Home / 7,988.49-11,979.63-3,309.26

Finding the Fourth Proportional to 7,988.49, 11,979.63 and 3,309.26

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Solution

The fourth proportional to 7,988.49, 11,979.63 and 3,309.26 is: 4,962.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.49 : 11,979.63 = 3,309.26 : x
  2. Step 2: Convert to fraction form
    7,988.49/11,979.63 = 3,309.26/x
  3. Step 3: Cross multiply
    7,988.49x = 11,979.63 × 3,309.26
  4. Step 4: Simplify right side
    7,988.49x = 39,643,650.48
  5. Step 5: Solve for x
    x = 39,643,650.48/7,988.49
  6. Step 6: Final answer
    x = 4,962.60

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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.