Home / 3,478.66-4,799.36-1,985.51

Finding the Fourth Proportional to 3,478.66, 4,799.36 and 1,985.51

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Solution

The fourth proportional to 3,478.66, 4,799.36 and 1,985.51 is: 2,739.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.66 : 4,799.36 = 1,985.51 : x
  2. Step 2: Convert to fraction form
    3,478.66/4,799.36 = 1,985.51/x
  3. Step 3: Cross multiply
    3,478.66x = 4,799.36 × 1,985.51
  4. Step 4: Simplify right side
    3,478.66x = 9,529,177.27
  5. Step 5: Solve for x
    x = 9,529,177.27/3,478.66
  6. Step 6: Final answer
    x = 2,739.32

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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.