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Finding the Fourth Proportional to 2,313.30, 3,471.31 and 853.48

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Solution

The fourth proportional to 2,313.30, 3,471.31 and 853.48 is: 1,280.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,313.30 : 3,471.31 = 853.48 : x
  2. Step 2: Convert to fraction form
    2,313.30/3,471.31 = 853.48/x
  3. Step 3: Cross multiply
    2,313.30x = 3,471.31 × 853.48
  4. Step 4: Simplify right side
    2,313.30x = 2,962,693.66
  5. Step 5: Solve for x
    x = 2,962,693.66/2,313.30
  6. Step 6: Final answer
    x = 1,280.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.