Home / 1,515.80-2,100.58-1,486.64

Finding the Fourth Proportional to 1,515.80, 2,100.58 and 1,486.64

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Solution

The fourth proportional to 1,515.80, 2,100.58 and 1,486.64 is: 2,060.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.80 : 2,100.58 = 1,486.64 : x
  2. Step 2: Convert to fraction form
    1,515.80/2,100.58 = 1,486.64/x
  3. Step 3: Cross multiply
    1,515.80x = 2,100.58 × 1,486.64
  4. Step 4: Simplify right side
    1,515.80x = 3,122,806.25
  5. Step 5: Solve for x
    x = 3,122,806.25/1,515.80
  6. Step 6: Final answer
    x = 2,060.17

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.