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Finding the Fourth Proportional to 3,411.70, 4,708.80 and 1,995.70

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Solution

The fourth proportional to 3,411.70, 4,708.80 and 1,995.70 is: 2,754.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,411.70 : 4,708.80 = 1,995.70 : x
  2. Step 2: Convert to fraction form
    3,411.70/4,708.80 = 1,995.70/x
  3. Step 3: Cross multiply
    3,411.70x = 4,708.80 × 1,995.70
  4. Step 4: Simplify right side
    3,411.70x = 9,397,352.16
  5. Step 5: Solve for x
    x = 9,397,352.16/3,411.70
  6. Step 6: Final answer
    x = 2,754.45

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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.