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Finding the Fourth Proportional to 1,974.06, 2,961.63 and 675.63

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Solution

The fourth proportional to 1,974.06, 2,961.63 and 675.63 is: 1,013.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,974.06 : 2,961.63 = 675.63 : x
  2. Step 2: Convert to fraction form
    1,974.06/2,961.63 = 675.63/x
  3. Step 3: Cross multiply
    1,974.06x = 2,961.63 × 675.63
  4. Step 4: Simplify right side
    1,974.06x = 2,000,966.08
  5. Step 5: Solve for x
    x = 2,000,966.08/1,974.06
  6. Step 6: Final answer
    x = 1,013.63

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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.