Home / 3,490.89-4,817.25-1,918.68

Finding the Fourth Proportional to 3,490.89, 4,817.25 and 1,918.68

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Solution

The fourth proportional to 3,490.89, 4,817.25 and 1,918.68 is: 2,647.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,490.89 : 4,817.25 = 1,918.68 : x
  2. Step 2: Convert to fraction form
    3,490.89/4,817.25 = 1,918.68/x
  3. Step 3: Cross multiply
    3,490.89x = 4,817.25 × 1,918.68
  4. Step 4: Simplify right side
    3,490.89x = 9,242,761.23
  5. Step 5: Solve for x
    x = 9,242,761.23/3,490.89
  6. Step 6: Final answer
    x = 2,647.68

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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.