Home / 2,639.50-3,642.58-1,709.62

Finding the Fourth Proportional to 2,639.50, 3,642.58 and 1,709.62

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Solution

The fourth proportional to 2,639.50, 3,642.58 and 1,709.62 is: 2,359.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.50 : 3,642.58 = 1,709.62 : x
  2. Step 2: Convert to fraction form
    2,639.50/3,642.58 = 1,709.62/x
  3. Step 3: Cross multiply
    2,639.50x = 3,642.58 × 1,709.62
  4. Step 4: Simplify right side
    2,639.50x = 6,227,427.62
  5. Step 5: Solve for x
    x = 6,227,427.62/2,639.50
  6. Step 6: Final answer
    x = 2,359.32

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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.