Home / 1,915.13-2,642.97-1,075.79

Finding the Fourth Proportional to 1,915.13, 2,642.97 and 1,075.79

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Solution

The fourth proportional to 1,915.13, 2,642.97 and 1,075.79 is: 1,484.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.13 : 2,642.97 = 1,075.79 : x
  2. Step 2: Convert to fraction form
    1,915.13/2,642.97 = 1,075.79/x
  3. Step 3: Cross multiply
    1,915.13x = 2,642.97 × 1,075.79
  4. Step 4: Simplify right side
    1,915.13x = 2,843,267.48
  5. Step 5: Solve for x
    x = 2,843,267.48/1,915.13
  6. Step 6: Final answer
    x = 1,484.64

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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.