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Finding the Fourth Proportional to 1,657.26, 2,486.90 and 1,643.49

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Solution

The fourth proportional to 1,657.26, 2,486.90 and 1,643.49 is: 2,466.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,657.26 : 2,486.90 = 1,643.49 : x
  2. Step 2: Convert to fraction form
    1,657.26/2,486.90 = 1,643.49/x
  3. Step 3: Cross multiply
    1,657.26x = 2,486.90 × 1,643.49
  4. Step 4: Simplify right side
    1,657.26x = 4,087,199.39
  5. Step 5: Solve for x
    x = 4,087,199.39/1,657.26
  6. Step 6: Final answer
    x = 2,466.24

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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.