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Finding the Fourth Proportional to 7,905.63, 10,909.69 and 4,368.77

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Solution

The fourth proportional to 7,905.63, 10,909.69 and 4,368.77 is: 6,028.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,905.63 : 10,909.69 = 4,368.77 : x
  2. Step 2: Convert to fraction form
    7,905.63/10,909.69 = 4,368.77/x
  3. Step 3: Cross multiply
    7,905.63x = 10,909.69 × 4,368.77
  4. Step 4: Simplify right side
    7,905.63x = 47,661,901.82
  5. Step 5: Solve for x
    x = 47,661,901.82/7,905.63
  6. Step 6: Final answer
    x = 6,028.85

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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.