Home / 3,688.58-5,085.35-2,979.63

Finding the Fourth Proportional to 3,688.58, 5,085.35 and 2,979.63

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Solution

The fourth proportional to 3,688.58, 5,085.35 and 2,979.63 is: 4,107.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,688.58 : 5,085.35 = 2,979.63 : x
  2. Step 2: Convert to fraction form
    3,688.58/5,085.35 = 2,979.63/x
  3. Step 3: Cross multiply
    3,688.58x = 5,085.35 × 2,979.63
  4. Step 4: Simplify right side
    3,688.58x = 15,152,468.87
  5. Step 5: Solve for x
    x = 15,152,468.87/3,688.58
  6. Step 6: Final answer
    x = 4,107.94

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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.