Home / 3,085.59-4,258.23-1,688.34

Finding the Fourth Proportional to 3,085.59, 4,258.23 and 1,688.34

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Solution

The fourth proportional to 3,085.59, 4,258.23 and 1,688.34 is: 2,329.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085.59 : 4,258.23 = 1,688.34 : x
  2. Step 2: Convert to fraction form
    3,085.59/4,258.23 = 1,688.34/x
  3. Step 3: Cross multiply
    3,085.59x = 4,258.23 × 1,688.34
  4. Step 4: Simplify right side
    3,085.59x = 7,189,349.68
  5. Step 5: Solve for x
    x = 7,189,349.68/3,085.59
  6. Step 6: Final answer
    x = 2,329.97

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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.