Home / 1,907.66-2,632.62-1,121.76

Finding the Fourth Proportional to 1,907.66, 2,632.62 and 1,121.76

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Solution

The fourth proportional to 1,907.66, 2,632.62 and 1,121.76 is: 1,548.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,907.66 : 2,632.62 = 1,121.76 : x
  2. Step 2: Convert to fraction form
    1,907.66/2,632.62 = 1,121.76/x
  3. Step 3: Cross multiply
    1,907.66x = 2,632.62 × 1,121.76
  4. Step 4: Simplify right side
    1,907.66x = 2,953,167.81
  5. Step 5: Solve for x
    x = 2,953,167.81/1,907.66
  6. Step 6: Final answer
    x = 1,548.06

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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.