Home / 7,102.31-9,801.23-4,119.91

Finding the Fourth Proportional to 7,102.31, 9,801.23 and 4,119.91

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Solution

The fourth proportional to 7,102.31, 9,801.23 and 4,119.91 is: 5,685.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,102.31 : 9,801.23 = 4,119.91 : x
  2. Step 2: Convert to fraction form
    7,102.31/9,801.23 = 4,119.91/x
  3. Step 3: Cross multiply
    7,102.31x = 9,801.23 × 4,119.91
  4. Step 4: Simplify right side
    7,102.31x = 40,380,185.49
  5. Step 5: Solve for x
    x = 40,380,185.49/7,102.31
  6. Step 6: Final answer
    x = 5,685.50

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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.