Home / 1,910.40-2,855.52-1,864.32

Finding the Fourth Proportional to 1,910.40, 2,855.52 and 1,864.32

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Solution

The fourth proportional to 1,910.40, 2,855.52 and 1,864.32 is: 2,786.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,910.40 : 2,855.52 = 1,864.32 : x
  2. Step 2: Convert to fraction form
    1,910.40/2,855.52 = 1,864.32/x
  3. Step 3: Cross multiply
    1,910.40x = 2,855.52 × 1,864.32
  4. Step 4: Simplify right side
    1,910.40x = 5,323,603.05
  5. Step 5: Solve for x
    x = 5,323,603.05/1,910.40
  6. Step 6: Final answer
    x = 2,786.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.