Home / 2,829.51-4,245.21-981.09

Finding the Fourth Proportional to 2,829.51, 4,245.21 and 981.09

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Solution

The fourth proportional to 2,829.51, 4,245.21 and 981.09 is: 1,471.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,829.51 : 4,245.21 = 981.09 : x
  2. Step 2: Convert to fraction form
    2,829.51/4,245.21 = 981.09/x
  3. Step 3: Cross multiply
    2,829.51x = 4,245.21 × 981.09
  4. Step 4: Simplify right side
    2,829.51x = 4,164,933.08
  5. Step 5: Solve for x
    x = 4,164,933.08/2,829.51
  6. Step 6: Final answer
    x = 1,471.96

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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.