Home / 3,100.90-4,279.30-1,703.64

Finding the Fourth Proportional to 3,100.90, 4,279.30 and 1,703.64

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Solution

The fourth proportional to 3,100.90, 4,279.30 and 1,703.64 is: 2,351.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,100.90 : 4,279.30 = 1,703.64 : x
  2. Step 2: Convert to fraction form
    3,100.90/4,279.30 = 1,703.64/x
  3. Step 3: Cross multiply
    3,100.90x = 4,279.30 × 1,703.64
  4. Step 4: Simplify right side
    3,100.90x = 7,290,386.65
  5. Step 5: Solve for x
    x = 7,290,386.65/3,100.90
  6. Step 6: Final answer
    x = 2,351.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.