Home / 2,980.56-4,113.22-1,636.29

Finding the Fourth Proportional to 2,980.56, 4,113.22 and 1,636.29

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Solution

The fourth proportional to 2,980.56, 4,113.22 and 1,636.29 is: 2,258.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.56 : 4,113.22 = 1,636.29 : x
  2. Step 2: Convert to fraction form
    2,980.56/4,113.22 = 1,636.29/x
  3. Step 3: Cross multiply
    2,980.56x = 4,113.22 × 1,636.29
  4. Step 4: Simplify right side
    2,980.56x = 6,730,424.66
  5. Step 5: Solve for x
    x = 6,730,424.66/2,980.56
  6. Step 6: Final answer
    x = 2,258.11

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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.