Home / 1,210.06-1,669.98-768.34

Finding the Fourth Proportional to 1,210.06, 1,669.98 and 768.34

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Solution

The fourth proportional to 1,210.06, 1,669.98 and 768.34 is: 1,060.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210.06 : 1,669.98 = 768.34 : x
  2. Step 2: Convert to fraction form
    1,210.06/1,669.98 = 768.34/x
  3. Step 3: Cross multiply
    1,210.06x = 1,669.98 × 768.34
  4. Step 4: Simplify right side
    1,210.06x = 1,283,112.43
  5. Step 5: Solve for x
    x = 1,283,112.43/1,210.06
  6. Step 6: Final answer
    x = 1,060.37

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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.