Home / 9,887.12-13,642.68-5,694.56

Finding the Fourth Proportional to 9,887.12, 13,642.68 and 5,694.56

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Solution

The fourth proportional to 9,887.12, 13,642.68 and 5,694.56 is: 7,857.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,887.12 : 13,642.68 = 5,694.56 : x
  2. Step 2: Convert to fraction form
    9,887.12/13,642.68 = 5,694.56/x
  3. Step 3: Cross multiply
    9,887.12x = 13,642.68 × 5,694.56
  4. Step 4: Simplify right side
    9,887.12x = 77,689,059.82
  5. Step 5: Solve for x
    x = 77,689,059.82/9,887.12
  6. Step 6: Final answer
    x = 7,857.60

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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.