Home / 3,394.02-5,090.87-928.79

Finding the Fourth Proportional to 3,394.02, 5,090.87 and 928.79

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Solution

The fourth proportional to 3,394.02, 5,090.87 and 928.79 is: 1,393.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,394.02 : 5,090.87 = 928.79 : x
  2. Step 2: Convert to fraction form
    3,394.02/5,090.87 = 928.79/x
  3. Step 3: Cross multiply
    3,394.02x = 5,090.87 × 928.79
  4. Step 4: Simplify right side
    3,394.02x = 4,728,319.05
  5. Step 5: Solve for x
    x = 4,728,319.05/3,394.02
  6. Step 6: Final answer
    x = 1,393.13

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1.5x scale

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.