Home / 7,729.68-10,666.98-4,192.90

Finding the Fourth Proportional to 7,729.68, 10,666.98 and 4,192.90

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Solution

The fourth proportional to 7,729.68, 10,666.98 and 4,192.90 is: 5,786.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,729.68 : 10,666.98 = 4,192.90 : x
  2. Step 2: Convert to fraction form
    7,729.68/10,666.98 = 4,192.90/x
  3. Step 3: Cross multiply
    7,729.68x = 10,666.98 × 4,192.90
  4. Step 4: Simplify right side
    7,729.68x = 44,725,580.44
  5. Step 5: Solve for x
    x = 44,725,580.44/7,729.68
  6. Step 6: Final answer
    x = 5,786.21

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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.