Home / 1,915.10-2,642.94-1,075.76

Finding the Fourth Proportional to 1,915.10, 2,642.94 and 1,075.76

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Solution

The fourth proportional to 1,915.10, 2,642.94 and 1,075.76 is: 1,484.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.10 : 2,642.94 = 1,075.76 : x
  2. Step 2: Convert to fraction form
    1,915.10/2,642.94 = 1,075.76/x
  3. Step 3: Cross multiply
    1,915.10x = 2,642.94 × 1,075.76
  4. Step 4: Simplify right side
    1,915.10x = 2,843,169.13
  5. Step 5: Solve for x
    x = 2,843,169.13/1,915.10
  6. Step 6: Final answer
    x = 1,484.61

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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.