Home / 2,199.36-3,035.16-1,315.20

Finding the Fourth Proportional to 2,199.36, 3,035.16 and 1,315.20

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Solution

The fourth proportional to 2,199.36, 3,035.16 and 1,315.20 is: 1,815.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,199.36 : 3,035.16 = 1,315.20 : x
  2. Step 2: Convert to fraction form
    2,199.36/3,035.16 = 1,315.20/x
  3. Step 3: Cross multiply
    2,199.36x = 3,035.16 × 1,315.20
  4. Step 4: Simplify right side
    2,199.36x = 3,991,842.43
  5. Step 5: Solve for x
    x = 3,991,842.43/2,199.36
  6. Step 6: Final answer
    x = 1,815.00

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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.