Home / 2,810.85-3,878.96-1,568.85

Finding the Fourth Proportional to 2,810.85, 3,878.96 and 1,568.85

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Solution

The fourth proportional to 2,810.85, 3,878.96 and 1,568.85 is: 2,165.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,810.85 : 3,878.96 = 1,568.85 : x
  2. Step 2: Convert to fraction form
    2,810.85/3,878.96 = 1,568.85/x
  3. Step 3: Cross multiply
    2,810.85x = 3,878.96 × 1,568.85
  4. Step 4: Simplify right side
    2,810.85x = 6,085,506.40
  5. Step 5: Solve for x
    x = 6,085,506.40/2,810.85
  6. Step 6: Final answer
    x = 2,165.01

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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.