Home / 1,907.23-2,632.32-1,121.32

Finding the Fourth Proportional to 1,907.23, 2,632.32 and 1,121.32

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Solution

The fourth proportional to 1,907.23, 2,632.32 and 1,121.32 is: 1,547.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,907.23 : 2,632.32 = 1,121.32 : x
  2. Step 2: Convert to fraction form
    1,907.23/2,632.32 = 1,121.32/x
  3. Step 3: Cross multiply
    1,907.23x = 2,632.32 × 1,121.32
  4. Step 4: Simplify right side
    1,907.23x = 2,951,673.06
  5. Step 5: Solve for x
    x = 2,951,673.06/1,907.23
  6. Step 6: Final answer
    x = 1,547.62

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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.