Home / 3,105.80-4,658.70-2,011.40

Finding the Fourth Proportional to 3,105.80, 4,658.70 and 2,011.40

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Solution

The fourth proportional to 3,105.80, 4,658.70 and 2,011.40 is: 3,017.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,105.80 : 4,658.70 = 2,011.40 : x
  2. Step 2: Convert to fraction form
    3,105.80/4,658.70 = 2,011.40/x
  3. Step 3: Cross multiply
    3,105.80x = 4,658.70 × 2,011.40
  4. Step 4: Simplify right side
    3,105.80x = 9,370,509.18
  5. Step 5: Solve for x
    x = 9,370,509.18/3,105.80
  6. Step 6: Final answer
    x = 3,017.10

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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.