Home / 5,285.76-7,288.26-4,287.96

Finding the Fourth Proportional to 5,285.76, 7,288.26 and 4,287.96

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Solution

The fourth proportional to 5,285.76, 7,288.26 and 4,287.96 is: 5,912.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285.76 : 7,288.26 = 4,287.96 : x
  2. Step 2: Convert to fraction form
    5,285.76/7,288.26 = 4,287.96/x
  3. Step 3: Cross multiply
    5,285.76x = 7,288.26 × 4,287.96
  4. Step 4: Simplify right side
    5,285.76x = 31,251,767.35
  5. Step 5: Solve for x
    x = 31,251,767.35/5,285.76
  6. Step 6: Final answer
    x = 5,912.45

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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.