Home / 2,777.13-4,165.68-928.25

Finding the Fourth Proportional to 2,777.13, 4,165.68 and 928.25

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Solution

The fourth proportional to 2,777.13, 4,165.68 and 928.25 is: 1,392.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,777.13 : 4,165.68 = 928.25 : x
  2. Step 2: Convert to fraction form
    2,777.13/4,165.68 = 928.25/x
  3. Step 3: Cross multiply
    2,777.13x = 4,165.68 × 928.25
  4. Step 4: Simplify right side
    2,777.13x = 3,866,771.63
  5. Step 5: Solve for x
    x = 3,866,771.63/2,777.13
  6. Step 6: Final answer
    x = 1,392.36

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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.