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Finding the Fourth Proportional to 5,641.74, 7,777.44 and 3,957.93

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Solution

The fourth proportional to 5,641.74, 7,777.44 and 3,957.93 is: 5,456.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,641.74 : 7,777.44 = 3,957.93 : x
  2. Step 2: Convert to fraction form
    5,641.74/7,777.44 = 3,957.93/x
  3. Step 3: Cross multiply
    5,641.74x = 7,777.44 × 3,957.93
  4. Step 4: Simplify right side
    5,641.74x = 30,782,563.10
  5. Step 5: Solve for x
    x = 30,782,563.10/5,641.74
  6. Step 6: Final answer
    x = 5,456.22

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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.