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Finding the Fourth Proportional to 4,692.36, 7,039.74 and 1,405.44

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Solution

The fourth proportional to 4,692.36, 7,039.74 and 1,405.44 is: 2,108.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,692.36 : 7,039.74 = 1,405.44 : x
  2. Step 2: Convert to fraction form
    4,692.36/7,039.74 = 1,405.44/x
  3. Step 3: Cross multiply
    4,692.36x = 7,039.74 × 1,405.44
  4. Step 4: Simplify right side
    4,692.36x = 9,893,932.19
  5. Step 5: Solve for x
    x = 9,893,932.19/4,692.36
  6. Step 6: Final answer
    x = 2,108.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.