Home / 5,721.40-7,896.78-3,364.90

Finding the Fourth Proportional to 5,721.40, 7,896.78 and 3,364.90

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Solution

The fourth proportional to 5,721.40, 7,896.78 and 3,364.90 is: 4,644.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,721.40 : 7,896.78 = 3,364.90 : x
  2. Step 2: Convert to fraction form
    5,721.40/7,896.78 = 3,364.90/x
  3. Step 3: Cross multiply
    5,721.40x = 7,896.78 × 3,364.90
  4. Step 4: Simplify right side
    5,721.40x = 26,571,875.02
  5. Step 5: Solve for x
    x = 26,571,875.02/5,721.40
  6. Step 6: Final answer
    x = 4,644.30

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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.