Home / 2,980.30-4,112.75-1,653.92

Finding the Fourth Proportional to 2,980.30, 4,112.75 and 1,653.92

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Solution

The fourth proportional to 2,980.30, 4,112.75 and 1,653.92 is: 2,282.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,980.30 : 4,112.75 = 1,653.92 : x
  2. Step 2: Convert to fraction form
    2,980.30/4,112.75 = 1,653.92/x
  3. Step 3: Cross multiply
    2,980.30x = 4,112.75 × 1,653.92
  4. Step 4: Simplify right side
    2,980.30x = 6,802,151.21
  5. Step 5: Solve for x
    x = 6,802,151.21/2,980.30
  6. Step 6: Final answer
    x = 2,282.38

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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.