Home / 3,605.40-4,977.90-2,899.80

Finding the Fourth Proportional to 3,605.40, 4,977.90 and 2,899.80

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Solution

The fourth proportional to 3,605.40, 4,977.90 and 2,899.80 is: 4,003.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,605.40 : 4,977.90 = 2,899.80 : x
  2. Step 2: Convert to fraction form
    3,605.40/4,977.90 = 2,899.80/x
  3. Step 3: Cross multiply
    3,605.40x = 4,977.90 × 2,899.80
  4. Step 4: Simplify right side
    3,605.40x = 14,434,914.42
  5. Step 5: Solve for x
    x = 14,434,914.42/3,605.40
  6. Step 6: Final answer
    x = 4,003.69

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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.