Home / 3,405.85-4,700.09-1,913.83

Finding the Fourth Proportional to 3,405.85, 4,700.09 and 1,913.83

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Solution

The fourth proportional to 3,405.85, 4,700.09 and 1,913.83 is: 2,641.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,405.85 : 4,700.09 = 1,913.83 : x
  2. Step 2: Convert to fraction form
    3,405.85/4,700.09 = 1,913.83/x
  3. Step 3: Cross multiply
    3,405.85x = 4,700.09 × 1,913.83
  4. Step 4: Simplify right side
    3,405.85x = 8,995,173.24
  5. Step 5: Solve for x
    x = 8,995,173.24/3,405.85
  6. Step 6: Final answer
    x = 2,641.09

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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.