Home / 5,077.80-7,615.08-2,155.68

Finding the Fourth Proportional to 5,077.80, 7,615.08 and 2,155.68

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Solution

The fourth proportional to 5,077.80, 7,615.08 and 2,155.68 is: 3,232.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,077.80 : 7,615.08 = 2,155.68 : x
  2. Step 2: Convert to fraction form
    5,077.80/7,615.08 = 2,155.68/x
  3. Step 3: Cross multiply
    5,077.80x = 7,615.08 × 2,155.68
  4. Step 4: Simplify right side
    5,077.80x = 16,415,675.65
  5. Step 5: Solve for x
    x = 16,415,675.65/5,077.80
  6. Step 6: Final answer
    x = 3,232.83

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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.