Home / 1,915.26-2,643.20-1,075.96

Finding the Fourth Proportional to 1,915.26, 2,643.20 and 1,075.96

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Solution

The fourth proportional to 1,915.26, 2,643.20 and 1,075.96 is: 1,484.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.26 : 2,643.20 = 1,075.96 : x
  2. Step 2: Convert to fraction form
    1,915.26/2,643.20 = 1,075.96/x
  3. Step 3: Cross multiply
    1,915.26x = 2,643.20 × 1,075.96
  4. Step 4: Simplify right side
    1,915.26x = 2,843,977.47
  5. Step 5: Solve for x
    x = 2,843,977.47/1,915.26
  6. Step 6: Final answer
    x = 1,484.90

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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.