Home / 3,455.60-4,770.84-2,131.08

Finding the Fourth Proportional to 3,455.60, 4,770.84 and 2,131.08

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Solution

The fourth proportional to 3,455.60, 4,770.84 and 2,131.08 is: 2,942.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,455.60 : 4,770.84 = 2,131.08 : x
  2. Step 2: Convert to fraction form
    3,455.60/4,770.84 = 2,131.08/x
  3. Step 3: Cross multiply
    3,455.60x = 4,770.84 × 2,131.08
  4. Step 4: Simplify right side
    3,455.60x = 10,167,041.71
  5. Step 5: Solve for x
    x = 10,167,041.71/3,455.60
  6. Step 6: Final answer
    x = 2,942.19

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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.