Home / 2,981.35-4,112.05-2,085.14

Finding the Fourth Proportional to 2,981.35, 4,112.05 and 2,085.14

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Solution

The fourth proportional to 2,981.35, 4,112.05 and 2,085.14 is: 2,875.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.35 : 4,112.05 = 2,085.14 : x
  2. Step 2: Convert to fraction form
    2,981.35/4,112.05 = 2,085.14/x
  3. Step 3: Cross multiply
    2,981.35x = 4,112.05 × 2,085.14
  4. Step 4: Simplify right side
    2,981.35x = 8,574,168.95
  5. Step 5: Solve for x
    x = 8,574,168.95/2,981.35
  6. Step 6: Final answer
    x = 2,875.94

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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.