Home / 2,079.21-3,118.81-846.35

Finding the Fourth Proportional to 2,079.21, 3,118.81 and 846.35

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Solution

The fourth proportional to 2,079.21, 3,118.81 and 846.35 is: 1,269.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.21 : 3,118.81 = 846.35 : x
  2. Step 2: Convert to fraction form
    2,079.21/3,118.81 = 846.35/x
  3. Step 3: Cross multiply
    2,079.21x = 3,118.81 × 846.35
  4. Step 4: Simplify right side
    2,079.21x = 2,639,604.84
  5. Step 5: Solve for x
    x = 2,639,604.84/2,079.21
  6. Step 6: Final answer
    x = 1,269.52

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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.