Home / 7,921.64-10,932.09-4,384.78

Finding the Fourth Proportional to 7,921.64, 10,932.09 and 4,384.78

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Solution

The fourth proportional to 7,921.64, 10,932.09 and 4,384.78 is: 6,051.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.64 : 10,932.09 = 4,384.78 : x
  2. Step 2: Convert to fraction form
    7,921.64/10,932.09 = 4,384.78/x
  3. Step 3: Cross multiply
    7,921.64x = 10,932.09 × 4,384.78
  4. Step 4: Simplify right side
    7,921.64x = 47,934,809.59
  5. Step 5: Solve for x
    x = 47,934,809.59/7,921.64
  6. Step 6: Final answer
    x = 6,051.12

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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.