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Finding the Fourth Proportional to 5,354.28, 7,388.28 and 3,230.28

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Solution

The fourth proportional to 5,354.28, 7,388.28 and 3,230.28 is: 4,457.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,354.28 : 7,388.28 = 3,230.28 : x
  2. Step 2: Convert to fraction form
    5,354.28/7,388.28 = 3,230.28/x
  3. Step 3: Cross multiply
    5,354.28x = 7,388.28 × 3,230.28
  4. Step 4: Simplify right side
    5,354.28x = 23,866,213.12
  5. Step 5: Solve for x
    x = 23,866,213.12/5,354.28
  6. Step 6: Final answer
    x = 4,457.41

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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.