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Finding the Fourth Proportional to 9,879.79, 14,819.68 and 3,637.50

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Solution

The fourth proportional to 9,879.79, 14,819.68 and 3,637.50 is: 5,456.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,879.79 : 14,819.68 = 3,637.50 : x
  2. Step 2: Convert to fraction form
    9,879.79/14,819.68 = 3,637.50/x
  3. Step 3: Cross multiply
    9,879.79x = 14,819.68 × 3,637.50
  4. Step 4: Simplify right side
    9,879.79x = 53,906,586
  5. Step 5: Solve for x
    x = 53,906,586/9,879.79
  6. Step 6: Final answer
    x = 5,456.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.