Home / 2,190.51-3,287.16-1,265.49

Finding the Fourth Proportional to 2,190.51, 3,287.16 and 1,265.49

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Solution

The fourth proportional to 2,190.51, 3,287.16 and 1,265.49 is: 1,899.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.51 : 3,287.16 = 1,265.49 : x
  2. Step 2: Convert to fraction form
    2,190.51/3,287.16 = 1,265.49/x
  3. Step 3: Cross multiply
    2,190.51x = 3,287.16 × 1,265.49
  4. Step 4: Simplify right side
    2,190.51x = 4,159,868.11
  5. Step 5: Solve for x
    x = 4,159,868.11/2,190.51
  6. Step 6: Final answer
    x = 1,899.04

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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.