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Finding the Fourth Proportional to 2,689.51, 3,711.62 and 1,570.27

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Solution

The fourth proportional to 2,689.51, 3,711.62 and 1,570.27 is: 2,167.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.51 : 3,711.62 = 1,570.27 : x
  2. Step 2: Convert to fraction form
    2,689.51/3,711.62 = 1,570.27/x
  3. Step 3: Cross multiply
    2,689.51x = 3,711.62 × 1,570.27
  4. Step 4: Simplify right side
    2,689.51x = 5,828,245.54
  5. Step 5: Solve for x
    x = 5,828,245.54/2,689.51
  6. Step 6: Final answer
    x = 2,167.03

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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.