Home / 7,910.36-11,870.15-2,980.38

Finding the Fourth Proportional to 7,910.36, 11,870.15 and 2,980.38

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Solution

The fourth proportional to 7,910.36, 11,870.15 and 2,980.38 is: 4,472.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,910.36 : 11,870.15 = 2,980.38 : x
  2. Step 2: Convert to fraction form
    7,910.36/11,870.15 = 2,980.38/x
  3. Step 3: Cross multiply
    7,910.36x = 11,870.15 × 2,980.38
  4. Step 4: Simplify right side
    7,910.36x = 35,377,550.21
  5. Step 5: Solve for x
    x = 35,377,550.21/7,910.36
  6. Step 6: Final answer
    x = 4,472.31

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1.5x scale

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.