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Finding the Fourth Proportional to 2,810.84, 3,878.96 and 1,568.84

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Solution

The fourth proportional to 2,810.84, 3,878.96 and 1,568.84 is: 2,165.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,810.84 : 3,878.96 = 1,568.84 : x
  2. Step 2: Convert to fraction form
    2,810.84/3,878.96 = 1,568.84/x
  3. Step 3: Cross multiply
    2,810.84x = 3,878.96 × 1,568.84
  4. Step 4: Simplify right side
    2,810.84x = 6,085,467.61
  5. Step 5: Solve for x
    x = 6,085,467.61/2,810.84
  6. Step 6: Final answer
    x = 2,165.00

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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.