Home / 1,190.90-1,786.29-707.03

Finding the Fourth Proportional to 1,190.90, 1,786.29 and 707.03

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Solution

The fourth proportional to 1,190.90, 1,786.29 and 707.03 is: 1,060.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190.90 : 1,786.29 = 707.03 : x
  2. Step 2: Convert to fraction form
    1,190.90/1,786.29 = 707.03/x
  3. Step 3: Cross multiply
    1,190.90x = 1,786.29 × 707.03
  4. Step 4: Simplify right side
    1,190.90x = 1,262,955.73
  5. Step 5: Solve for x
    x = 1,262,955.73/1,190.90
  6. Step 6: Final answer
    x = 1,060.50

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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.