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Finding the Fourth Proportional to 1,959.80, 2,704.55 and 1,075.64

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Solution

The fourth proportional to 1,959.80, 2,704.55 and 1,075.64 is: 1,484.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,959.80 : 2,704.55 = 1,075.64 : x
  2. Step 2: Convert to fraction form
    1,959.80/2,704.55 = 1,075.64/x
  3. Step 3: Cross multiply
    1,959.80x = 2,704.55 × 1,075.64
  4. Step 4: Simplify right side
    1,959.80x = 2,909,122.16
  5. Step 5: Solve for x
    x = 2,909,122.16/1,959.80
  6. Step 6: Final answer
    x = 1,484.40

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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.