Home / 1,907.55-2,632.30-1,121.45

Finding the Fourth Proportional to 1,907.55, 2,632.30 and 1,121.45

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Solution

The fourth proportional to 1,907.55, 2,632.30 and 1,121.45 is: 1,547.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,907.55 : 2,632.30 = 1,121.45 : x
  2. Step 2: Convert to fraction form
    1,907.55/2,632.30 = 1,121.45/x
  3. Step 3: Cross multiply
    1,907.55x = 2,632.30 × 1,121.45
  4. Step 4: Simplify right side
    1,907.55x = 2,951,976.87
  5. Step 5: Solve for x
    x = 2,951,976.87/1,907.55
  6. Step 6: Final answer
    x = 1,547.52

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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.