Home / 2,135.16-3,206.99-1,315.04

Finding the Fourth Proportional to 2,135.16, 3,206.99 and 1,315.04

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Solution

The fourth proportional to 2,135.16, 3,206.99 and 1,315.04 is: 1,975.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.16 : 3,206.99 = 1,315.04 : x
  2. Step 2: Convert to fraction form
    2,135.16/3,206.99 = 1,315.04/x
  3. Step 3: Cross multiply
    2,135.16x = 3,206.99 × 1,315.04
  4. Step 4: Simplify right side
    2,135.16x = 4,217,307.38
  5. Step 5: Solve for x
    x = 4,217,307.38/2,135.16
  6. Step 6: Final answer
    x = 1,975.17

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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.