Home / 1,915.77-2,860.68-1,521.35

Finding the Fourth Proportional to 1,915.77, 2,860.68 and 1,521.35

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Solution

The fourth proportional to 1,915.77, 2,860.68 and 1,521.35 is: 2,271.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.77 : 2,860.68 = 1,521.35 : x
  2. Step 2: Convert to fraction form
    1,915.77/2,860.68 = 1,521.35/x
  3. Step 3: Cross multiply
    1,915.77x = 2,860.68 × 1,521.35
  4. Step 4: Simplify right side
    1,915.77x = 4,352,081.21
  5. Step 5: Solve for x
    x = 4,352,081.21/1,915.77
  6. Step 6: Final answer
    x = 2,271.71

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.