Home / 2,070.30-3,106.44-1,290.09

Finding the Fourth Proportional to 2,070.30, 3,106.44 and 1,290.09

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Solution

The fourth proportional to 2,070.30, 3,106.44 and 1,290.09 is: 1,935.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,070.30 : 3,106.44 = 1,290.09 : x
  2. Step 2: Convert to fraction form
    2,070.30/3,106.44 = 1,290.09/x
  3. Step 3: Cross multiply
    2,070.30x = 3,106.44 × 1,290.09
  4. Step 4: Simplify right side
    2,070.30x = 4,007,587.18
  5. Step 5: Solve for x
    x = 4,007,587.18/2,070.30
  6. Step 6: Final answer
    x = 1,935.75

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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.