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Finding the Fourth Proportional to 9,289.28, 12,819.18 and 5,563.28

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Solution

The fourth proportional to 9,289.28, 12,819.18 and 5,563.28 is: 7,677.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,289.28 : 12,819.18 = 5,563.28 : x
  2. Step 2: Convert to fraction form
    9,289.28/12,819.18 = 5,563.28/x
  3. Step 3: Cross multiply
    9,289.28x = 12,819.18 × 5,563.28
  4. Step 4: Simplify right side
    9,289.28x = 71,316,687.71
  5. Step 5: Solve for x
    x = 71,316,687.71/9,289.28
  6. Step 6: Final answer
    x = 7,677.31

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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.