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Finding the Fourth Proportional to 5,643.73, 7,788.21 and 3,125.68

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Solution

The fourth proportional to 5,643.73, 7,788.21 and 3,125.68 is: 4,313.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,643.73 : 7,788.21 = 3,125.68 : x
  2. Step 2: Convert to fraction form
    5,643.73/7,788.21 = 3,125.68/x
  3. Step 3: Cross multiply
    5,643.73x = 7,788.21 × 3,125.68
  4. Step 4: Simplify right side
    5,643.73x = 24,343,452.23
  5. Step 5: Solve for x
    x = 24,343,452.23/5,643.73
  6. Step 6: Final answer
    x = 4,313.36

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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.