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Finding the Fourth Proportional to 5,328.70, 7,991.35 and 1,770.17

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Solution

The fourth proportional to 5,328.70, 7,991.35 and 1,770.17 is: 2,654.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,328.70 : 7,991.35 = 1,770.17 : x
  2. Step 2: Convert to fraction form
    5,328.70/7,991.35 = 1,770.17/x
  3. Step 3: Cross multiply
    5,328.70x = 7,991.35 × 1,770.17
  4. Step 4: Simplify right side
    5,328.70x = 14,146,003.65
  5. Step 5: Solve for x
    x = 14,146,003.65/5,328.70
  6. Step 6: Final answer
    x = 2,654.68

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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.