Home / 1,629.81-2,248.95-1,188.21

Finding the Fourth Proportional to 1,629.81, 2,248.95 and 1,188.21

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Solution

The fourth proportional to 1,629.81, 2,248.95 and 1,188.21 is: 1,639.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,629.81 : 2,248.95 = 1,188.21 : x
  2. Step 2: Convert to fraction form
    1,629.81/2,248.95 = 1,188.21/x
  3. Step 3: Cross multiply
    1,629.81x = 2,248.95 × 1,188.21
  4. Step 4: Simplify right side
    1,629.81x = 2,672,224.88
  5. Step 5: Solve for x
    x = 2,672,224.88/1,629.81
  6. Step 6: Final answer
    x = 1,639.59

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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.