Home / 2,860.40-3,944.78-1,798.26

Finding the Fourth Proportional to 2,860.40, 3,944.78 and 1,798.26

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Solution

The fourth proportional to 2,860.40, 3,944.78 and 1,798.26 is: 2,479.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,860.40 : 3,944.78 = 1,798.26 : x
  2. Step 2: Convert to fraction form
    2,860.40/3,944.78 = 1,798.26/x
  3. Step 3: Cross multiply
    2,860.40x = 3,944.78 × 1,798.26
  4. Step 4: Simplify right side
    2,860.40x = 7,093,740.08
  5. Step 5: Solve for x
    x = 7,093,740.08/2,860.40
  6. Step 6: Final answer
    x = 2,479.98

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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.