Home / 3,116.30-4,295.63-2,119.86

Finding the Fourth Proportional to 3,116.30, 4,295.63 and 2,119.86

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Solution

The fourth proportional to 3,116.30, 4,295.63 and 2,119.86 is: 2,922.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,116.30 : 4,295.63 = 2,119.86 : x
  2. Step 2: Convert to fraction form
    3,116.30/4,295.63 = 2,119.86/x
  3. Step 3: Cross multiply
    3,116.30x = 4,295.63 × 2,119.86
  4. Step 4: Simplify right side
    3,116.30x = 9,106,139.51
  5. Step 5: Solve for x
    x = 9,106,139.51/3,116.30
  6. Step 6: Final answer
    x = 2,922.10

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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.