Home / 1,293.20-1,940.08-427.52

Finding the Fourth Proportional to 1,293.20, 1,940.08 and 427.52

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Solution

The fourth proportional to 1,293.20, 1,940.08 and 427.52 is: 641.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,293.20 : 1,940.08 = 427.52 : x
  2. Step 2: Convert to fraction form
    1,293.20/1,940.08 = 427.52/x
  3. Step 3: Cross multiply
    1,293.20x = 1,940.08 × 427.52
  4. Step 4: Simplify right side
    1,293.20x = 829,423.00
  5. Step 5: Solve for x
    x = 829,423.00/1,293.20
  6. Step 6: Final answer
    x = 641.37

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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.