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Finding the Fourth Proportional to 5,354.78, 7,389.63 and 3,230.42

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Solution

The fourth proportional to 5,354.78, 7,389.63 and 3,230.42 is: 4,458.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,354.78 : 7,389.63 = 3,230.42 : x
  2. Step 2: Convert to fraction form
    5,354.78/7,389.63 = 3,230.42/x
  3. Step 3: Cross multiply
    5,354.78x = 7,389.63 × 3,230.42
  4. Step 4: Simplify right side
    5,354.78x = 23,871,571.60
  5. Step 5: Solve for x
    x = 23,871,571.60/5,354.78
  6. Step 6: Final answer
    x = 4,458.00

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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.