Home / 3,415.14-4,711.53-2,155.77

Finding the Fourth Proportional to 3,415.14, 4,711.53 and 2,155.77

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Solution

The fourth proportional to 3,415.14, 4,711.53 and 2,155.77 is: 2,974.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.14 : 4,711.53 = 2,155.77 : x
  2. Step 2: Convert to fraction form
    3,415.14/4,711.53 = 2,155.77/x
  3. Step 3: Cross multiply
    3,415.14x = 4,711.53 × 2,155.77
  4. Step 4: Simplify right side
    3,415.14x = 10,156,975.03
  5. Step 5: Solve for x
    x = 10,156,975.03/3,415.14
  6. Step 6: Final answer
    x = 2,974.10

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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.