Home / 2,820.28-4,230.24-1,155.10

Finding the Fourth Proportional to 2,820.28, 4,230.24 and 1,155.10

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Solution

The fourth proportional to 2,820.28, 4,230.24 and 1,155.10 is: 1,732.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.28 : 4,230.24 = 1,155.10 : x
  2. Step 2: Convert to fraction form
    2,820.28/4,230.24 = 1,155.10/x
  3. Step 3: Cross multiply
    2,820.28x = 4,230.24 × 1,155.10
  4. Step 4: Simplify right side
    2,820.28x = 4,886,350.22
  5. Step 5: Solve for x
    x = 4,886,350.22/2,820.28
  6. Step 6: Final answer
    x = 1,732.58

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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.