Home / 3,490.21-4,816.56-1,918.41

Finding the Fourth Proportional to 3,490.21, 4,816.56 and 1,918.41

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Solution

The fourth proportional to 3,490.21, 4,816.56 and 1,918.41 is: 2,647.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,490.21 : 4,816.56 = 1,918.41 : x
  2. Step 2: Convert to fraction form
    3,490.21/4,816.56 = 1,918.41/x
  3. Step 3: Cross multiply
    3,490.21x = 4,816.56 × 1,918.41
  4. Step 4: Simplify right side
    3,490.21x = 9,240,136.87
  5. Step 5: Solve for x
    x = 9,240,136.87/3,490.21
  6. Step 6: Final answer
    x = 2,647.44

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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.