Home / 1,539.05-2,305.80-1,075.91

Finding the Fourth Proportional to 1,539.05, 2,305.80 and 1,075.91

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Solution

The fourth proportional to 1,539.05, 2,305.80 and 1,075.91 is: 1,611.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,539.05 : 2,305.80 = 1,075.91 : x
  2. Step 2: Convert to fraction form
    1,539.05/2,305.80 = 1,075.91/x
  3. Step 3: Cross multiply
    1,539.05x = 2,305.80 × 1,075.91
  4. Step 4: Simplify right side
    1,539.05x = 2,480,821.75
  5. Step 5: Solve for x
    x = 2,480,821.75/1,539.05
  6. Step 6: Final answer
    x = 1,611.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.