Home / 1,940.24-2,910.80-707.63

Finding the Fourth Proportional to 1,940.24, 2,910.80 and 707.63

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Solution

The fourth proportional to 1,940.24, 2,910.80 and 707.63 is: 1,061.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,940.24 : 2,910.80 = 707.63 : x
  2. Step 2: Convert to fraction form
    1,940.24/2,910.80 = 707.63/x
  3. Step 3: Cross multiply
    1,940.24x = 2,910.80 × 707.63
  4. Step 4: Simplify right side
    1,940.24x = 2,059,756.62
  5. Step 5: Solve for x
    x = 2,059,756.62/1,940.24
  6. Step 6: Final answer
    x = 1,061.60

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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.