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Finding the Fourth Proportional to 5,242.51, 7,863.77 and 2,643.63

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Solution

The fourth proportional to 5,242.51, 7,863.77 and 2,643.63 is: 3,965.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,242.51 : 7,863.77 = 2,643.63 : x
  2. Step 2: Convert to fraction form
    5,242.51/7,863.77 = 2,643.63/x
  3. Step 3: Cross multiply
    5,242.51x = 7,863.77 × 2,643.63
  4. Step 4: Simplify right side
    5,242.51x = 20,788,898.29
  5. Step 5: Solve for x
    x = 20,788,898.29/5,242.51
  6. Step 6: Final answer
    x = 3,965.45

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Similar ratio
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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.