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Finding the Fourth Proportional to 9,917.51, 14,887.19 and 5,762.21

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Solution

The fourth proportional to 9,917.51, 14,887.19 and 5,762.21 is: 8,649.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,917.51 : 14,887.19 = 5,762.21 : x
  2. Step 2: Convert to fraction form
    9,917.51/14,887.19 = 5,762.21/x
  3. Step 3: Cross multiply
    9,917.51x = 14,887.19 × 5,762.21
  4. Step 4: Simplify right side
    9,917.51x = 85,783,055.06
  5. Step 5: Solve for x
    x = 85,783,055.06/9,917.51
  6. Step 6: Final answer
    x = 8,649.66

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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.