Home / 2,739.02-4,107.93-790.80

Finding the Fourth Proportional to 2,739.02, 4,107.93 and 790.80

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Solution

The fourth proportional to 2,739.02, 4,107.93 and 790.80 is: 1,186.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,739.02 : 4,107.93 = 790.80 : x
  2. Step 2: Convert to fraction form
    2,739.02/4,107.93 = 790.80/x
  3. Step 3: Cross multiply
    2,739.02x = 4,107.93 × 790.80
  4. Step 4: Simplify right side
    2,739.02x = 3,248,551.04
  5. Step 5: Solve for x
    x = 3,248,551.04/2,739.02
  6. Step 6: Final answer
    x = 1,186.03

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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.