Home / 2,316.48-3,194.28-1,981.68

Finding the Fourth Proportional to 2,316.48, 3,194.28 and 1,981.68

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Solution

The fourth proportional to 2,316.48, 3,194.28 and 1,981.68 is: 2,732.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,316.48 : 3,194.28 = 1,981.68 : x
  2. Step 2: Convert to fraction form
    2,316.48/3,194.28 = 1,981.68/x
  3. Step 3: Cross multiply
    2,316.48x = 3,194.28 × 1,981.68
  4. Step 4: Simplify right side
    2,316.48x = 6,330,040.79
  5. Step 5: Solve for x
    x = 6,330,040.79/2,316.48
  6. Step 6: Final answer
    x = 2,732.61

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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.