Home / 2,828.12-3,902.88-1,569.32

Finding the Fourth Proportional to 2,828.12, 3,902.88 and 1,569.32

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Solution

The fourth proportional to 2,828.12, 3,902.88 and 1,569.32 is: 2,165.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,828.12 : 3,902.88 = 1,569.32 : x
  2. Step 2: Convert to fraction form
    2,828.12/3,902.88 = 1,569.32/x
  3. Step 3: Cross multiply
    2,828.12x = 3,902.88 × 1,569.32
  4. Step 4: Simplify right side
    2,828.12x = 6,124,867.64
  5. Step 5: Solve for x
    x = 6,124,867.64/2,828.12
  6. Step 6: Final answer
    x = 2,165.70

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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.