Home / 3,478.13-4,799.80-1,986.07

Finding the Fourth Proportional to 3,478.13, 4,799.80 and 1,986.07

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Solution

The fourth proportional to 3,478.13, 4,799.80 and 1,986.07 is: 2,740.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.13 : 4,799.80 = 1,986.07 : x
  2. Step 2: Convert to fraction form
    3,478.13/4,799.80 = 1,986.07/x
  3. Step 3: Cross multiply
    3,478.13x = 4,799.80 × 1,986.07
  4. Step 4: Simplify right side
    3,478.13x = 9,532,738.79
  5. Step 5: Solve for x
    x = 9,532,738.79/3,478.13
  6. Step 6: Final answer
    x = 2,740.77

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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.