Home / 1,813.68-2,496.36-1,288.80

Finding the Fourth Proportional to 1,813.68, 2,496.36 and 1,288.80

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Solution

The fourth proportional to 1,813.68, 2,496.36 and 1,288.80 is: 1,773.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,813.68 : 2,496.36 = 1,288.80 : x
  2. Step 2: Convert to fraction form
    1,813.68/2,496.36 = 1,288.80/x
  3. Step 3: Cross multiply
    1,813.68x = 2,496.36 × 1,288.80
  4. Step 4: Simplify right side
    1,813.68x = 3,217,308.77
  5. Step 5: Solve for x
    x = 3,217,308.77/1,813.68
  6. Step 6: Final answer
    x = 1,773.91

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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.