Home / 2,805.60-3,872.70-1,924.32

Finding the Fourth Proportional to 2,805.60, 3,872.70 and 1,924.32

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Solution

The fourth proportional to 2,805.60, 3,872.70 and 1,924.32 is: 2,656.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,805.60 : 3,872.70 = 1,924.32 : x
  2. Step 2: Convert to fraction form
    2,805.60/3,872.70 = 1,924.32/x
  3. Step 3: Cross multiply
    2,805.60x = 3,872.70 × 1,924.32
  4. Step 4: Simplify right side
    2,805.60x = 7,452,314.06
  5. Step 5: Solve for x
    x = 7,452,314.06/2,805.60
  6. Step 6: Final answer
    x = 2,656.23

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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.