Home / 8,155.80-11,271.60-6,165.72

Finding the Fourth Proportional to 8,155.80, 11,271.60 and 6,165.72

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Solution

The fourth proportional to 8,155.80, 11,271.60 and 6,165.72 is: 8,521.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,155.80 : 11,271.60 = 6,165.72 : x
  2. Step 2: Convert to fraction form
    8,155.80/11,271.60 = 6,165.72/x
  3. Step 3: Cross multiply
    8,155.80x = 11,271.60 × 6,165.72
  4. Step 4: Simplify right side
    8,155.80x = 69,497,529.55
  5. Step 5: Solve for x
    x = 69,497,529.55/8,155.80
  6. Step 6: Final answer
    x = 8,521.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.