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Finding the Fourth Proportional to 8,762.77, 12,063.09 and 7,920.98

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Solution

The fourth proportional to 8,762.77, 12,063.09 and 7,920.98 is: 10,904.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,762.77 : 12,063.09 = 7,920.98 : x
  2. Step 2: Convert to fraction form
    8,762.77/12,063.09 = 7,920.98/x
  3. Step 3: Cross multiply
    8,762.77x = 12,063.09 × 7,920.98
  4. Step 4: Simplify right side
    8,762.77x = 95,551,494.63
  5. Step 5: Solve for x
    x = 95,551,494.63/8,762.77
  6. Step 6: Final answer
    x = 10,904.26

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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.