Home / 1,636.89-2,258.31-1,077.68

Finding the Fourth Proportional to 1,636.89, 2,258.31 and 1,077.68

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Solution

The fourth proportional to 1,636.89, 2,258.31 and 1,077.68 is: 1,486.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,636.89 : 2,258.31 = 1,077.68 : x
  2. Step 2: Convert to fraction form
    1,636.89/2,258.31 = 1,077.68/x
  3. Step 3: Cross multiply
    1,636.89x = 2,258.31 × 1,077.68
  4. Step 4: Simplify right side
    1,636.89x = 2,433,730.13
  5. Step 5: Solve for x
    x = 2,433,730.13/1,636.89
  6. Step 6: Final answer
    x = 1,486.80

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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.