Home / 7,892.31-10,891.40-4,307.28

Finding the Fourth Proportional to 7,892.31, 10,891.40 and 4,307.28

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Solution

The fourth proportional to 7,892.31, 10,891.40 and 4,307.28 is: 5,944.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,892.31 : 10,891.40 = 4,307.28 : x
  2. Step 2: Convert to fraction form
    7,892.31/10,891.40 = 4,307.28/x
  3. Step 3: Cross multiply
    7,892.31x = 10,891.40 × 4,307.28
  4. Step 4: Simplify right side
    7,892.31x = 46,912,309.39
  5. Step 5: Solve for x
    x = 46,912,309.39/7,892.31
  6. Step 6: Final answer
    x = 5,944.05

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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.