Home / 7,108.94-9,810.55-3,965.06

Finding the Fourth Proportional to 7,108.94, 9,810.55 and 3,965.06

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Solution

The fourth proportional to 7,108.94, 9,810.55 and 3,965.06 is: 5,471.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,108.94 : 9,810.55 = 3,965.06 : x
  2. Step 2: Convert to fraction form
    7,108.94/9,810.55 = 3,965.06/x
  3. Step 3: Cross multiply
    7,108.94x = 9,810.55 × 3,965.06
  4. Step 4: Simplify right side
    7,108.94x = 38,899,448.87
  5. Step 5: Solve for x
    x = 38,899,448.87/7,108.94
  6. Step 6: Final answer
    x = 5,471.90

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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.