Home / 4,910.80-7,365.90-1,989.34

Finding the Fourth Proportional to 4,910.80, 7,365.90 and 1,989.34

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Solution

The fourth proportional to 4,910.80, 7,365.90 and 1,989.34 is: 2,983.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,910.80 : 7,365.90 = 1,989.34 : x
  2. Step 2: Convert to fraction form
    4,910.80/7,365.90 = 1,989.34/x
  3. Step 3: Cross multiply
    4,910.80x = 7,365.90 × 1,989.34
  4. Step 4: Simplify right side
    4,910.80x = 14,653,279.51
  5. Step 5: Solve for x
    x = 14,653,279.51/4,910.80
  6. Step 6: Final answer
    x = 2,983.89

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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.