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Finding the Fourth Proportional to 5,470.36, 7,555.76 and 5,431.96

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Solution

The fourth proportional to 5,470.36, 7,555.76 and 5,431.96 is: 7,502.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,470.36 : 7,555.76 = 5,431.96 : x
  2. Step 2: Convert to fraction form
    5,470.36/7,555.76 = 5,431.96/x
  3. Step 3: Cross multiply
    5,470.36x = 7,555.76 × 5,431.96
  4. Step 4: Simplify right side
    5,470.36x = 41,042,586.09
  5. Step 5: Solve for x
    x = 41,042,586.09/5,470.36
  6. Step 6: Final answer
    x = 7,502.72

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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.