Home / 8,122.12-11,210.30-5,141.93

Finding the Fourth Proportional to 8,122.12, 11,210.30 and 5,141.93

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Solution

The fourth proportional to 8,122.12, 11,210.30 and 5,141.93 is: 7,096.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,122.12 : 11,210.30 = 5,141.93 : x
  2. Step 2: Convert to fraction form
    8,122.12/11,210.30 = 5,141.93/x
  3. Step 3: Cross multiply
    8,122.12x = 11,210.30 × 5,141.93
  4. Step 4: Simplify right side
    8,122.12x = 57,642,515.40
  5. Step 5: Solve for x
    x = 57,642,515.40/8,122.12
  6. Step 6: Final answer
    x = 7,096.98

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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.