Home / 9,285.31-12,814.60-5,305.65

Finding the Fourth Proportional to 9,285.31, 12,814.60 and 5,305.65

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Solution

The fourth proportional to 9,285.31, 12,814.60 and 5,305.65 is: 7,322.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,285.31 : 12,814.60 = 5,305.65 : x
  2. Step 2: Convert to fraction form
    9,285.31/12,814.60 = 5,305.65/x
  3. Step 3: Cross multiply
    9,285.31x = 12,814.60 × 5,305.65
  4. Step 4: Simplify right side
    9,285.31x = 67,989,691.89
  5. Step 5: Solve for x
    x = 67,989,691.89/9,285.31
  6. Step 6: Final answer
    x = 7,322.29

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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.