Home / 2,688.49-3,709.70-1,694.32

Finding the Fourth Proportional to 2,688.49, 3,709.70 and 1,694.32

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Solution

The fourth proportional to 2,688.49, 3,709.70 and 1,694.32 is: 2,337.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.49 : 3,709.70 = 1,694.32 : x
  2. Step 2: Convert to fraction form
    2,688.49/3,709.70 = 1,694.32/x
  3. Step 3: Cross multiply
    2,688.49x = 3,709.70 × 1,694.32
  4. Step 4: Simplify right side
    2,688.49x = 6,285,407.51
  5. Step 5: Solve for x
    x = 6,285,407.51/2,688.49
  6. Step 6: Final answer
    x = 2,337.89

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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.