Home / 1,907.20-2,631.72-1,161.19

Finding the Fourth Proportional to 1,907.20, 2,631.72 and 1,161.19

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Solution

The fourth proportional to 1,907.20, 2,631.72 and 1,161.19 is: 1,602.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,907.20 : 2,631.72 = 1,161.19 : x
  2. Step 2: Convert to fraction form
    1,907.20/2,631.72 = 1,161.19/x
  3. Step 3: Cross multiply
    1,907.20x = 2,631.72 × 1,161.19
  4. Step 4: Simplify right side
    1,907.20x = 3,055,926.95
  5. Step 5: Solve for x
    x = 3,055,926.95/1,907.20
  6. Step 6: Final answer
    x = 1,602.31

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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.