Home / 3,085.46-4,258-1,688.18

Finding the Fourth Proportional to 3,085.46, 4,258 and 1,688.18

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Solution

The fourth proportional to 3,085.46, 4,258 and 1,688.18 is: 2,329.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085.46 : 4,258 = 1,688.18 : x
  2. Step 2: Convert to fraction form
    3,085.46/4,258 = 1,688.18/x
  3. Step 3: Cross multiply
    3,085.46x = 4,258 × 1,688.18
  4. Step 4: Simplify right side
    3,085.46x = 7,188,270.44
  5. Step 5: Solve for x
    x = 7,188,270.44/3,085.46
  6. Step 6: Final answer
    x = 2,329.72

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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.