Home / 1,881.21-2,597.25-1,209.32

Finding the Fourth Proportional to 1,881.21, 2,597.25 and 1,209.32

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Solution

The fourth proportional to 1,881.21, 2,597.25 and 1,209.32 is: 1,669.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,881.21 : 2,597.25 = 1,209.32 : x
  2. Step 2: Convert to fraction form
    1,881.21/2,597.25 = 1,209.32/x
  3. Step 3: Cross multiply
    1,881.21x = 2,597.25 × 1,209.32
  4. Step 4: Simplify right side
    1,881.21x = 3,140,893.38
  5. Step 5: Solve for x
    x = 3,140,893.38/1,881.21
  6. Step 6: Final answer
    x = 1,669.61

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Double scale
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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.