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Finding the Fourth Proportional to 5,170.56, 7,756.65 and 1,707

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Solution

The fourth proportional to 5,170.56, 7,756.65 and 1,707 is: 2,560.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,170.56 : 7,756.65 = 1,707 : x
  2. Step 2: Convert to fraction form
    5,170.56/7,756.65 = 1,707/x
  3. Step 3: Cross multiply
    5,170.56x = 7,756.65 × 1,707
  4. Step 4: Simplify right side
    5,170.56x = 13,240,601.55
  5. Step 5: Solve for x
    x = 13,240,601.55/5,170.56
  6. Step 6: Final answer
    x = 2,560.77

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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.