Home / 3,490.30-4,816.71-1,918.54

Finding the Fourth Proportional to 3,490.30, 4,816.71 and 1,918.54

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Solution

The fourth proportional to 3,490.30, 4,816.71 and 1,918.54 is: 2,647.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,490.30 : 4,816.71 = 1,918.54 : x
  2. Step 2: Convert to fraction form
    3,490.30/4,816.71 = 1,918.54/x
  3. Step 3: Cross multiply
    3,490.30x = 4,816.71 × 1,918.54
  4. Step 4: Simplify right side
    3,490.30x = 9,241,050.80
  5. Step 5: Solve for x
    x = 9,241,050.80/3,490.30
  6. Step 6: Final answer
    x = 2,647.64

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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.