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Finding the Fourth Proportional to 5,300.12, 7,311 and 3,620.69

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Solution

The fourth proportional to 5,300.12, 7,311 and 3,620.69 is: 4,994.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,300.12 : 7,311 = 3,620.69 : x
  2. Step 2: Convert to fraction form
    5,300.12/7,311 = 3,620.69/x
  3. Step 3: Cross multiply
    5,300.12x = 7,311 × 3,620.69
  4. Step 4: Simplify right side
    5,300.12x = 26,470,828.04
  5. Step 5: Solve for x
    x = 26,470,828.04/5,300.12
  6. Step 6: Final answer
    x = 4,994.39

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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.