Home / 9,285.28-12,814.57-5,305.64

Finding the Fourth Proportional to 9,285.28, 12,814.57 and 5,305.64

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Solution

The fourth proportional to 9,285.28, 12,814.57 and 5,305.64 is: 7,322.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,285.28 : 12,814.57 = 5,305.64 : x
  2. Step 2: Convert to fraction form
    9,285.28/12,814.57 = 5,305.64/x
  3. Step 3: Cross multiply
    9,285.28x = 12,814.57 × 5,305.64
  4. Step 4: Simplify right side
    9,285.28x = 67,989,437.73
  5. Step 5: Solve for x
    x = 67,989,437.73/9,285.28
  6. Step 6: Final answer
    x = 7,322.28

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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.