Home / 2,389.25-3,583.77-1,090.70

Finding the Fourth Proportional to 2,389.25, 3,583.77 and 1,090.70

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Solution

The fourth proportional to 2,389.25, 3,583.77 and 1,090.70 is: 1,636.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.25 : 3,583.77 = 1,090.70 : x
  2. Step 2: Convert to fraction form
    2,389.25/3,583.77 = 1,090.70/x
  3. Step 3: Cross multiply
    2,389.25x = 3,583.77 × 1,090.70
  4. Step 4: Simplify right side
    2,389.25x = 3,908,800.02
  5. Step 5: Solve for x
    x = 3,908,800.02/2,389.25
  6. Step 6: Final answer
    x = 1,636.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.