Home / 5,110.50-7,666.25-1,990.77

Finding the Fourth Proportional to 5,110.50, 7,666.25 and 1,990.77

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Solution

The fourth proportional to 5,110.50, 7,666.25 and 1,990.77 is: 2,986.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,110.50 : 7,666.25 = 1,990.77 : x
  2. Step 2: Convert to fraction form
    5,110.50/7,666.25 = 1,990.77/x
  3. Step 3: Cross multiply
    5,110.50x = 7,666.25 × 1,990.77
  4. Step 4: Simplify right side
    5,110.50x = 15,261,740.51
  5. Step 5: Solve for x
    x = 15,261,740.51/5,110.50
  6. Step 6: Final answer
    x = 2,986.35

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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.