Home / 2,800.68-4,197.76-1,155.12

Finding the Fourth Proportional to 2,800.68, 4,197.76 and 1,155.12

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Solution

The fourth proportional to 2,800.68, 4,197.76 and 1,155.12 is: 1,731.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800.68 : 4,197.76 = 1,155.12 : x
  2. Step 2: Convert to fraction form
    2,800.68/4,197.76 = 1,155.12/x
  3. Step 3: Cross multiply
    2,800.68x = 4,197.76 × 1,155.12
  4. Step 4: Simplify right side
    2,800.68x = 4,848,916.53
  5. Step 5: Solve for x
    x = 4,848,916.53/2,800.68
  6. Step 6: Final answer
    x = 1,731.34

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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.