Home / 2,930.31-4,042.70-1,809.32

Finding the Fourth Proportional to 2,930.31, 4,042.70 and 1,809.32

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Solution

The fourth proportional to 2,930.31, 4,042.70 and 1,809.32 is: 2,496.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930.31 : 4,042.70 = 1,809.32 : x
  2. Step 2: Convert to fraction form
    2,930.31/4,042.70 = 1,809.32/x
  3. Step 3: Cross multiply
    2,930.31x = 4,042.70 × 1,809.32
  4. Step 4: Simplify right side
    2,930.31x = 7,314,538.23
  5. Step 5: Solve for x
    x = 7,314,538.23/2,930.31
  6. Step 6: Final answer
    x = 2,496.17

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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.