Home / 2,210.40-3,315.51-749.55

Finding the Fourth Proportional to 2,210.40, 3,315.51 and 749.55

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Solution

The fourth proportional to 2,210.40, 3,315.51 and 749.55 is: 1,124.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,210.40 : 3,315.51 = 749.55 : x
  2. Step 2: Convert to fraction form
    2,210.40/3,315.51 = 749.55/x
  3. Step 3: Cross multiply
    2,210.40x = 3,315.51 × 749.55
  4. Step 4: Simplify right side
    2,210.40x = 2,485,143.33
  5. Step 5: Solve for x
    x = 2,485,143.33/2,210.40
  6. Step 6: Final answer
    x = 1,124.30

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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.