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Finding the Fourth Proportional to 2,689.74, 3,713.04 and 1,758.24

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Solution

The fourth proportional to 2,689.74, 3,713.04 and 1,758.24 is: 2,427.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.74 : 3,713.04 = 1,758.24 : x
  2. Step 2: Convert to fraction form
    2,689.74/3,713.04 = 1,758.24/x
  3. Step 3: Cross multiply
    2,689.74x = 3,713.04 × 1,758.24
  4. Step 4: Simplify right side
    2,689.74x = 6,528,415.45
  5. Step 5: Solve for x
    x = 6,528,415.45/2,689.74
  6. Step 6: Final answer
    x = 2,427.15

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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.