Home / 3,490.59-4,817.10-1,918.69

Finding the Fourth Proportional to 3,490.59, 4,817.10 and 1,918.69

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Solution

The fourth proportional to 3,490.59, 4,817.10 and 1,918.69 is: 2,647.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,490.59 : 4,817.10 = 1,918.69 : x
  2. Step 2: Convert to fraction form
    3,490.59/4,817.10 = 1,918.69/x
  3. Step 3: Cross multiply
    3,490.59x = 4,817.10 × 1,918.69
  4. Step 4: Simplify right side
    3,490.59x = 9,242,516.75
  5. Step 5: Solve for x
    x = 9,242,516.75/3,490.59
  6. Step 6: Final answer
    x = 2,647.84

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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.