Home / 9,285.17-12,815.01-7,163.78

Finding the Fourth Proportional to 9,285.17, 12,815.01 and 7,163.78

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Solution

The fourth proportional to 9,285.17, 12,815.01 and 7,163.78 is: 9,887.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,285.17 : 12,815.01 = 7,163.78 : x
  2. Step 2: Convert to fraction form
    9,285.17/12,815.01 = 7,163.78/x
  3. Step 3: Cross multiply
    9,285.17x = 12,815.01 × 7,163.78
  4. Step 4: Simplify right side
    9,285.17x = 91,803,848.26
  5. Step 5: Solve for x
    x = 91,803,848.26/9,285.17
  6. Step 6: Final answer
    x = 9,887.15

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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.