Home / 3,122.15-4,303.56-2,113.54

Finding the Fourth Proportional to 3,122.15, 4,303.56 and 2,113.54

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Solution

The fourth proportional to 3,122.15, 4,303.56 and 2,113.54 is: 2,913.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.15 : 4,303.56 = 2,113.54 : x
  2. Step 2: Convert to fraction form
    3,122.15/4,303.56 = 2,113.54/x
  3. Step 3: Cross multiply
    3,122.15x = 4,303.56 × 2,113.54
  4. Step 4: Simplify right side
    3,122.15x = 9,095,740.92
  5. Step 5: Solve for x
    x = 9,095,740.92/3,122.15
  6. Step 6: Final answer
    x = 2,913.29

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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.