Home / 2,489.58-3,435.69-1,427.45

Finding the Fourth Proportional to 2,489.58, 3,435.69 and 1,427.45

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Solution

The fourth proportional to 2,489.58, 3,435.69 and 1,427.45 is: 1,969.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,489.58 : 3,435.69 = 1,427.45 : x
  2. Step 2: Convert to fraction form
    2,489.58/3,435.69 = 1,427.45/x
  3. Step 3: Cross multiply
    2,489.58x = 3,435.69 × 1,427.45
  4. Step 4: Simplify right side
    2,489.58x = 4,904,258.51
  5. Step 5: Solve for x
    x = 4,904,258.51/2,489.58
  6. Step 6: Final answer
    x = 1,969.91

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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.