Home / 2,790.23-4,185.20-710.30

Finding the Fourth Proportional to 2,790.23, 4,185.20 and 710.30

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Solution

The fourth proportional to 2,790.23, 4,185.20 and 710.30 is: 1,065.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.23 : 4,185.20 = 710.30 : x
  2. Step 2: Convert to fraction form
    2,790.23/4,185.20 = 710.30/x
  3. Step 3: Cross multiply
    2,790.23x = 4,185.20 × 710.30
  4. Step 4: Simplify right side
    2,790.23x = 2,972,723.08
  5. Step 5: Solve for x
    x = 2,972,723.08/2,790.23
  6. Step 6: Final answer
    x = 1,065.41

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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.