Home / 2,921.74-4,032.90-1,873.78

Finding the Fourth Proportional to 2,921.74, 4,032.90 and 1,873.78

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Solution

The fourth proportional to 2,921.74, 4,032.90 and 1,873.78 is: 2,586.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.74 : 4,032.90 = 1,873.78 : x
  2. Step 2: Convert to fraction form
    2,921.74/4,032.90 = 1,873.78/x
  3. Step 3: Cross multiply
    2,921.74x = 4,032.90 × 1,873.78
  4. Step 4: Simplify right side
    2,921.74x = 7,556,767.36
  5. Step 5: Solve for x
    x = 7,556,767.36/2,921.74
  6. Step 6: Final answer
    x = 2,586.39

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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.