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Finding the Fourth Proportional to 8,879.51, 12,256.43 and 5,735.63

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Solution

The fourth proportional to 8,879.51, 12,256.43 and 5,735.63 is: 7,916.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.51 : 12,256.43 = 5,735.63 : x
  2. Step 2: Convert to fraction form
    8,879.51/12,256.43 = 5,735.63/x
  3. Step 3: Cross multiply
    8,879.51x = 12,256.43 × 5,735.63
  4. Step 4: Simplify right side
    8,879.51x = 70,298,257.64
  5. Step 5: Solve for x
    x = 70,298,257.64/8,879.51
  6. Step 6: Final answer
    x = 7,916.91

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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.