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Finding the Fourth Proportional to 3,486.19, 4,810.97 and 1,914.32

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Solution

The fourth proportional to 3,486.19, 4,810.97 and 1,914.32 is: 2,641.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,486.19 : 4,810.97 = 1,914.32 : x
  2. Step 2: Convert to fraction form
    3,486.19/4,810.97 = 1,914.32/x
  3. Step 3: Cross multiply
    3,486.19x = 4,810.97 × 1,914.32
  4. Step 4: Simplify right side
    3,486.19x = 9,209,716.82
  5. Step 5: Solve for x
    x = 9,209,716.82/3,486.19
  6. Step 6: Final answer
    x = 2,641.77

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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.