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Finding the Fourth Proportional to 5,365.65, 8,030.97 and 5,172.99

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Solution

The fourth proportional to 5,365.65, 8,030.97 and 5,172.99 is: 7,742.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,365.65 : 8,030.97 = 5,172.99 : x
  2. Step 2: Convert to fraction form
    5,365.65/8,030.97 = 5,172.99/x
  3. Step 3: Cross multiply
    5,365.65x = 8,030.97 × 5,172.99
  4. Step 4: Simplify right side
    5,365.65x = 41,544,127.50
  5. Step 5: Solve for x
    x = 41,544,127.50/5,365.65
  6. Step 6: Final answer
    x = 7,742.61

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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.