Home / 7,921.88-10,932.12-4,385

Finding the Fourth Proportional to 7,921.88, 10,932.12 and 4,385

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Solution

The fourth proportional to 7,921.88, 10,932.12 and 4,385 is: 6,051.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.88 : 10,932.12 = 4,385 : x
  2. Step 2: Convert to fraction form
    7,921.88/10,932.12 = 4,385/x
  3. Step 3: Cross multiply
    7,921.88x = 10,932.12 × 4,385
  4. Step 4: Simplify right side
    7,921.88x = 47,937,346.20
  5. Step 5: Solve for x
    x = 47,937,346.20/7,921.88
  6. Step 6: Final answer
    x = 6,051.26

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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.