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Finding the Fourth Proportional to 5,516.88, 8,275.31 and 1,412.88

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Solution

The fourth proportional to 5,516.88, 8,275.31 and 1,412.88 is: 2,119.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,516.88 : 8,275.31 = 1,412.88 : x
  2. Step 2: Convert to fraction form
    5,516.88/8,275.31 = 1,412.88/x
  3. Step 3: Cross multiply
    5,516.88x = 8,275.31 × 1,412.88
  4. Step 4: Simplify right side
    5,516.88x = 11,692,019.99
  5. Step 5: Solve for x
    x = 11,692,019.99/5,516.88
  6. Step 6: Final answer
    x = 2,119.32

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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.