Home / 1,394.02-2,090.69-406.57

Finding the Fourth Proportional to 1,394.02, 2,090.69 and 406.57

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Solution

The fourth proportional to 1,394.02, 2,090.69 and 406.57 is: 609.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,394.02 : 2,090.69 = 406.57 : x
  2. Step 2: Convert to fraction form
    1,394.02/2,090.69 = 406.57/x
  3. Step 3: Cross multiply
    1,394.02x = 2,090.69 × 406.57
  4. Step 4: Simplify right side
    1,394.02x = 850,011.83
  5. Step 5: Solve for x
    x = 850,011.83/1,394.02
  6. Step 6: Final answer
    x = 609.76

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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.