Home / 2,959.02-4,081.74-2,161.32

Finding the Fourth Proportional to 2,959.02, 4,081.74 and 2,161.32

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Solution

The fourth proportional to 2,959.02, 4,081.74 and 2,161.32 is: 2,981.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,959.02 : 4,081.74 = 2,161.32 : x
  2. Step 2: Convert to fraction form
    2,959.02/4,081.74 = 2,161.32/x
  3. Step 3: Cross multiply
    2,959.02x = 4,081.74 × 2,161.32
  4. Step 4: Simplify right side
    2,959.02x = 8,821,946.30
  5. Step 5: Solve for x
    x = 8,821,946.30/2,959.02
  6. Step 6: Final answer
    x = 2,981.37

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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.