Home / 1,635.34-2,258.64-1,078.30

Finding the Fourth Proportional to 1,635.34, 2,258.64 and 1,078.30

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Solution

The fourth proportional to 1,635.34, 2,258.64 and 1,078.30 is: 1,489.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,635.34 : 2,258.64 = 1,078.30 : x
  2. Step 2: Convert to fraction form
    1,635.34/2,258.64 = 1,078.30/x
  3. Step 3: Cross multiply
    1,635.34x = 2,258.64 × 1,078.30
  4. Step 4: Simplify right side
    1,635.34x = 2,435,491.51
  5. Step 5: Solve for x
    x = 2,435,491.51/1,635.34
  6. Step 6: Final answer
    x = 1,489.29

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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.