Home / 3,085.38-4,257.83-1,688.13

Finding the Fourth Proportional to 3,085.38, 4,257.83 and 1,688.13

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Solution

The fourth proportional to 3,085.38, 4,257.83 and 1,688.13 is: 2,329.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085.38 : 4,257.83 = 1,688.13 : x
  2. Step 2: Convert to fraction form
    3,085.38/4,257.83 = 1,688.13/x
  3. Step 3: Cross multiply
    3,085.38x = 4,257.83 × 1,688.13
  4. Step 4: Simplify right side
    3,085.38x = 7,187,779.63
  5. Step 5: Solve for x
    x = 7,187,779.63/3,085.38
  6. Step 6: Final answer
    x = 2,329.62

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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.