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Finding the Fourth Proportional to 9,166.53, 12,649.18 and 5,187.54

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Solution

The fourth proportional to 9,166.53, 12,649.18 and 5,187.54 is: 7,158.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,166.53 : 12,649.18 = 5,187.54 : x
  2. Step 2: Convert to fraction form
    9,166.53/12,649.18 = 5,187.54/x
  3. Step 3: Cross multiply
    9,166.53x = 12,649.18 × 5,187.54
  4. Step 4: Simplify right side
    9,166.53x = 65,618,127.22
  5. Step 5: Solve for x
    x = 65,618,127.22/9,166.53
  6. Step 6: Final answer
    x = 7,158.45

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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.