Home / 2,803.21-3,870.04-1,860.28

Finding the Fourth Proportional to 2,803.21, 3,870.04 and 1,860.28

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Solution

The fourth proportional to 2,803.21, 3,870.04 and 1,860.28 is: 2,568.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,803.21 : 3,870.04 = 1,860.28 : x
  2. Step 2: Convert to fraction form
    2,803.21/3,870.04 = 1,860.28/x
  3. Step 3: Cross multiply
    2,803.21x = 3,870.04 × 1,860.28
  4. Step 4: Simplify right side
    2,803.21x = 7,199,358.01
  5. Step 5: Solve for x
    x = 7,199,358.01/2,803.21
  6. Step 6: Final answer
    x = 2,568.25

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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.