Home / 7,729.21-10,666.29-4,192.39

Finding the Fourth Proportional to 7,729.21, 10,666.29 and 4,192.39

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Solution

The fourth proportional to 7,729.21, 10,666.29 and 4,192.39 is: 5,785.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,729.21 : 10,666.29 = 4,192.39 : x
  2. Step 2: Convert to fraction form
    7,729.21/10,666.29 = 4,192.39/x
  3. Step 3: Cross multiply
    7,729.21x = 10,666.29 × 4,192.39
  4. Step 4: Simplify right side
    7,729.21x = 44,717,247.53
  5. Step 5: Solve for x
    x = 44,717,247.53/7,729.21
  6. Step 6: Final answer
    x = 5,785.49

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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.