Home / 2,065.19-3,099.80-1,515.80

Finding the Fourth Proportional to 2,065.19, 3,099.80 and 1,515.80

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Solution

The fourth proportional to 2,065.19, 3,099.80 and 1,515.80 is: 2,275.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,065.19 : 3,099.80 = 1,515.80 : x
  2. Step 2: Convert to fraction form
    2,065.19/3,099.80 = 1,515.80/x
  3. Step 3: Cross multiply
    2,065.19x = 3,099.80 × 1,515.80
  4. Step 4: Simplify right side
    2,065.19x = 4,698,688.38
  5. Step 5: Solve for x
    x = 4,698,688.38/2,065.19
  6. Step 6: Final answer
    x = 2,275.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.