Home / 2,199.90-3,035.78-1,315.17

Finding the Fourth Proportional to 2,199.90, 3,035.78 and 1,315.17

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Solution

The fourth proportional to 2,199.90, 3,035.78 and 1,315.17 is: 1,814.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,199.90 : 3,035.78 = 1,315.17 : x
  2. Step 2: Convert to fraction form
    2,199.90/3,035.78 = 1,315.17/x
  3. Step 3: Cross multiply
    2,199.90x = 3,035.78 × 1,315.17
  4. Step 4: Simplify right side
    2,199.90x = 3,992,566.78
  5. Step 5: Solve for x
    x = 3,992,566.78/2,199.90
  6. Step 6: Final answer
    x = 1,814.89

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1.5x scale

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.