Home / 2,210.05-3,315.57-729.21

Finding the Fourth Proportional to 2,210.05, 3,315.57 and 729.21

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Solution

The fourth proportional to 2,210.05, 3,315.57 and 729.21 is: 1,093.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,210.05 : 3,315.57 = 729.21 : x
  2. Step 2: Convert to fraction form
    2,210.05/3,315.57 = 729.21/x
  3. Step 3: Cross multiply
    2,210.05x = 3,315.57 × 729.21
  4. Step 4: Simplify right side
    2,210.05x = 2,417,756.50
  5. Step 5: Solve for x
    x = 2,417,756.50/2,210.05
  6. Step 6: Final answer
    x = 1,093.98

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1.5x scale

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.