Home / 1,915.30-2,643.16-1,075.97

Finding the Fourth Proportional to 1,915.30, 2,643.16 and 1,075.97

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Solution

The fourth proportional to 1,915.30, 2,643.16 and 1,075.97 is: 1,484.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.30 : 2,643.16 = 1,075.97 : x
  2. Step 2: Convert to fraction form
    1,915.30/2,643.16 = 1,075.97/x
  3. Step 3: Cross multiply
    1,915.30x = 2,643.16 × 1,075.97
  4. Step 4: Simplify right side
    1,915.30x = 2,843,960.87
  5. Step 5: Solve for x
    x = 2,843,960.87/1,915.30
  6. Step 6: Final answer
    x = 1,484.86

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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.