Home / 2,839.07-4,257.70-1,970.75

Finding the Fourth Proportional to 2,839.07, 4,257.70 and 1,970.75

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Solution

The fourth proportional to 2,839.07, 4,257.70 and 1,970.75 is: 2,955.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.07 : 4,257.70 = 1,970.75 : x
  2. Step 2: Convert to fraction form
    2,839.07/4,257.70 = 1,970.75/x
  3. Step 3: Cross multiply
    2,839.07x = 4,257.70 × 1,970.75
  4. Step 4: Simplify right side
    2,839.07x = 8,390,862.28
  5. Step 5: Solve for x
    x = 8,390,862.28/2,839.07
  6. Step 6: Final answer
    x = 2,955.50

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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.