Home / 2,750.90-4,126.95-1,289.25

Finding the Fourth Proportional to 2,750.90, 4,126.95 and 1,289.25

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Solution

The fourth proportional to 2,750.90, 4,126.95 and 1,289.25 is: 1,934.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,750.90 : 4,126.95 = 1,289.25 : x
  2. Step 2: Convert to fraction form
    2,750.90/4,126.95 = 1,289.25/x
  3. Step 3: Cross multiply
    2,750.90x = 4,126.95 × 1,289.25
  4. Step 4: Simplify right side
    2,750.90x = 5,320,670.29
  5. Step 5: Solve for x
    x = 5,320,670.29/2,750.90
  6. Step 6: Final answer
    x = 1,934.16

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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.