Home / 1,968.48-2,951.64-1,275.12

Finding the Fourth Proportional to 1,968.48, 2,951.64 and 1,275.12

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Solution

The fourth proportional to 1,968.48, 2,951.64 and 1,275.12 is: 1,911.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.48 : 2,951.64 = 1,275.12 : x
  2. Step 2: Convert to fraction form
    1,968.48/2,951.64 = 1,275.12/x
  3. Step 3: Cross multiply
    1,968.48x = 2,951.64 × 1,275.12
  4. Step 4: Simplify right side
    1,968.48x = 3,763,695.20
  5. Step 5: Solve for x
    x = 3,763,695.20/1,968.48
  6. Step 6: Final answer
    x = 1,911.98

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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.