Home / 1,684.88-2,325.07-976.70

Finding the Fourth Proportional to 1,684.88, 2,325.07 and 976.70

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Solution

The fourth proportional to 1,684.88, 2,325.07 and 976.70 is: 1,347.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,684.88 : 2,325.07 = 976.70 : x
  2. Step 2: Convert to fraction form
    1,684.88/2,325.07 = 976.70/x
  3. Step 3: Cross multiply
    1,684.88x = 2,325.07 × 976.70
  4. Step 4: Simplify right side
    1,684.88x = 2,270,890.99
  5. Step 5: Solve for x
    x = 2,270,890.99/1,684.88
  6. Step 6: Final answer
    x = 1,347.81

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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.