Home / 2,799.48-3,858.53-1,913.75

Finding the Fourth Proportional to 2,799.48, 3,858.53 and 1,913.75

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Solution

The fourth proportional to 2,799.48, 3,858.53 and 1,913.75 is: 2,637.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,799.48 : 3,858.53 = 1,913.75 : x
  2. Step 2: Convert to fraction form
    2,799.48/3,858.53 = 1,913.75/x
  3. Step 3: Cross multiply
    2,799.48x = 3,858.53 × 1,913.75
  4. Step 4: Simplify right side
    2,799.48x = 7,384,232.93
  5. Step 5: Solve for x
    x = 7,384,232.93/2,799.48
  6. Step 6: Final answer
    x = 2,637.72

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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.