Home / 2,947.13-4,420.70-1,215.75

Finding the Fourth Proportional to 2,947.13, 4,420.70 and 1,215.75

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Solution

The fourth proportional to 2,947.13, 4,420.70 and 1,215.75 is: 1,823.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.13 : 4,420.70 = 1,215.75 : x
  2. Step 2: Convert to fraction form
    2,947.13/4,420.70 = 1,215.75/x
  3. Step 3: Cross multiply
    2,947.13x = 4,420.70 × 1,215.75
  4. Step 4: Simplify right side
    2,947.13x = 5,374,459.95
  5. Step 5: Solve for x
    x = 5,374,459.95/2,947.13
  6. Step 6: Final answer
    x = 1,823.63

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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.