Home / 1,985.50-2,733.51-1,668.70

Finding the Fourth Proportional to 1,985.50, 2,733.51 and 1,668.70

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Solution

The fourth proportional to 1,985.50, 2,733.51 and 1,668.70 is: 2,297.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,985.50 : 2,733.51 = 1,668.70 : x
  2. Step 2: Convert to fraction form
    1,985.50/2,733.51 = 1,668.70/x
  3. Step 3: Cross multiply
    1,985.50x = 2,733.51 × 1,668.70
  4. Step 4: Simplify right side
    1,985.50x = 4,561,408.14
  5. Step 5: Solve for x
    x = 4,561,408.14/1,985.50
  6. Step 6: Final answer
    x = 2,297.36

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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.