Home / 1,685.14-2,324.16-1,212.96

Finding the Fourth Proportional to 1,685.14, 2,324.16 and 1,212.96

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Solution

The fourth proportional to 1,685.14, 2,324.16 and 1,212.96 is: 1,672.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,685.14 : 2,324.16 = 1,212.96 : x
  2. Step 2: Convert to fraction form
    1,685.14/2,324.16 = 1,212.96/x
  3. Step 3: Cross multiply
    1,685.14x = 2,324.16 × 1,212.96
  4. Step 4: Simplify right side
    1,685.14x = 2,819,113.11
  5. Step 5: Solve for x
    x = 2,819,113.11/1,685.14
  6. Step 6: Final answer
    x = 1,672.93

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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.