Home / 3,089.30-4,264.60-1,971.70

Finding the Fourth Proportional to 3,089.30, 4,264.60 and 1,971.70

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Solution

The fourth proportional to 3,089.30, 4,264.60 and 1,971.70 is: 2,721.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,089.30 : 4,264.60 = 1,971.70 : x
  2. Step 2: Convert to fraction form
    3,089.30/4,264.60 = 1,971.70/x
  3. Step 3: Cross multiply
    3,089.30x = 4,264.60 × 1,971.70
  4. Step 4: Simplify right side
    3,089.30x = 8,408,511.82
  5. Step 5: Solve for x
    x = 8,408,511.82/3,089.30
  6. Step 6: Final answer
    x = 2,721.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.