Home / 1,940.13-2,911.10-707.67

Finding the Fourth Proportional to 1,940.13, 2,911.10 and 707.67

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Solution

The fourth proportional to 1,940.13, 2,911.10 and 707.67 is: 1,061.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940.13 : 2,911.10 = 707.67 : x
  2. Step 2: Convert to fraction form
    1,940.13/2,911.10 = 707.67/x
  3. Step 3: Cross multiply
    1,940.13x = 2,911.10 × 707.67
  4. Step 4: Simplify right side
    1,940.13x = 2,060,094.60
  5. Step 5: Solve for x
    x = 2,060,094.60/1,940.13
  6. Step 6: Final answer
    x = 1,061.83

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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.