Home / 7,929.09-10,931.36-6,675.21

Finding the Fourth Proportional to 7,929.09, 10,931.36 and 6,675.21

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Solution

The fourth proportional to 7,929.09, 10,931.36 and 6,675.21 is: 9,202.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,929.09 : 10,931.36 = 6,675.21 : x
  2. Step 2: Convert to fraction form
    7,929.09/10,931.36 = 6,675.21/x
  3. Step 3: Cross multiply
    7,929.09x = 10,931.36 × 6,675.21
  4. Step 4: Simplify right side
    7,929.09x = 72,969,090.21
  5. Step 5: Solve for x
    x = 72,969,090.21/7,929.09
  6. Step 6: Final answer
    x = 9,202.71

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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.