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Finding the Fourth Proportional to 8,455.51, 11,671.87 and 7,569.77

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Solution

The fourth proportional to 8,455.51, 11,671.87 and 7,569.77 is: 10,449.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,455.51 : 11,671.87 = 7,569.77 : x
  2. Step 2: Convert to fraction form
    8,455.51/11,671.87 = 7,569.77/x
  3. Step 3: Cross multiply
    8,455.51x = 11,671.87 × 7,569.77
  4. Step 4: Simplify right side
    8,455.51x = 88,353,371.37
  5. Step 5: Solve for x
    x = 88,353,371.37/8,455.51
  6. Step 6: Final answer
    x = 10,449.21

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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.