Home / 7,729.42-10,666.56-4,192.69

Finding the Fourth Proportional to 7,729.42, 10,666.56 and 4,192.69

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Solution

The fourth proportional to 7,729.42, 10,666.56 and 4,192.69 is: 5,785.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,729.42 : 10,666.56 = 4,192.69 : x
  2. Step 2: Convert to fraction form
    7,729.42/10,666.56 = 4,192.69/x
  3. Step 3: Cross multiply
    7,729.42x = 10,666.56 × 4,192.69
  4. Step 4: Simplify right side
    7,729.42x = 44,721,579.45
  5. Step 5: Solve for x
    x = 44,721,579.45/7,729.42
  6. Step 6: Final answer
    x = 5,785.89

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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.