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Finding the Fourth Proportional to 2,068.35, 3,101.70 and 681.63

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Solution

The fourth proportional to 2,068.35, 3,101.70 and 681.63 is: 1,022.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,068.35 : 3,101.70 = 681.63 : x
  2. Step 2: Convert to fraction form
    2,068.35/3,101.70 = 681.63/x
  3. Step 3: Cross multiply
    2,068.35x = 3,101.70 × 681.63
  4. Step 4: Simplify right side
    2,068.35x = 2,114,211.77
  5. Step 5: Solve for x
    x = 2,114,211.77/2,068.35
  6. Step 6: Final answer
    x = 1,022.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.