Home / 4,456.77-6,686.70-1,991.85

Finding the Fourth Proportional to 4,456.77, 6,686.70 and 1,991.85

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Solution

The fourth proportional to 4,456.77, 6,686.70 and 1,991.85 is: 2,988.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,456.77 : 6,686.70 = 1,991.85 : x
  2. Step 2: Convert to fraction form
    4,456.77/6,686.70 = 1,991.85/x
  3. Step 3: Cross multiply
    4,456.77x = 6,686.70 × 1,991.85
  4. Step 4: Simplify right side
    4,456.77x = 13,318,903.40
  5. Step 5: Solve for x
    x = 13,318,903.40/4,456.77
  6. Step 6: Final answer
    x = 2,988.47

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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.