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Finding the Fourth Proportional to 9,360.99, 12,918.15 and 5,169.24

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Solution

The fourth proportional to 9,360.99, 12,918.15 and 5,169.24 is: 7,133.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,360.99 : 12,918.15 = 5,169.24 : x
  2. Step 2: Convert to fraction form
    9,360.99/12,918.15 = 5,169.24/x
  3. Step 3: Cross multiply
    9,360.99x = 12,918.15 × 5,169.24
  4. Step 4: Simplify right side
    9,360.99x = 66,777,017.71
  5. Step 5: Solve for x
    x = 66,777,017.71/9,360.99
  6. Step 6: Final answer
    x = 7,133.54

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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.