Home / 2,939.36-4,055.28-1,804.64

Finding the Fourth Proportional to 2,939.36, 4,055.28 and 1,804.64

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Solution

The fourth proportional to 2,939.36, 4,055.28 and 1,804.64 is: 2,489.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.36 : 4,055.28 = 1,804.64 : x
  2. Step 2: Convert to fraction form
    2,939.36/4,055.28 = 1,804.64/x
  3. Step 3: Cross multiply
    2,939.36x = 4,055.28 × 1,804.64
  4. Step 4: Simplify right side
    2,939.36x = 7,318,320.50
  5. Step 5: Solve for x
    x = 7,318,320.50/2,939.36
  6. Step 6: Final answer
    x = 2,489.77

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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.