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Finding the Fourth Proportional to 8,607.36, 11,879.64 and 4,881.36

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Solution

The fourth proportional to 8,607.36, 11,879.64 and 4,881.36 is: 6,737.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,607.36 : 11,879.64 = 4,881.36 : x
  2. Step 2: Convert to fraction form
    8,607.36/11,879.64 = 4,881.36/x
  3. Step 3: Cross multiply
    8,607.36x = 11,879.64 × 4,881.36
  4. Step 4: Simplify right side
    8,607.36x = 57,988,799.51
  5. Step 5: Solve for x
    x = 57,988,799.51/8,607.36
  6. Step 6: Final answer
    x = 6,737.12

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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.