Home / 2,824.64-3,899.04-2,124.80

Finding the Fourth Proportional to 2,824.64, 3,899.04 and 2,124.80

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Solution

The fourth proportional to 2,824.64, 3,899.04 and 2,124.80 is: 2,933.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,824.64 : 3,899.04 = 2,124.80 : x
  2. Step 2: Convert to fraction form
    2,824.64/3,899.04 = 2,124.80/x
  3. Step 3: Cross multiply
    2,824.64x = 3,899.04 × 2,124.80
  4. Step 4: Simplify right side
    2,824.64x = 8,284,680.19
  5. Step 5: Solve for x
    x = 8,284,680.19/2,824.64
  6. Step 6: Final answer
    x = 2,933.00

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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.