Home / 7,865.10-11,790.36-4,164.21

Finding the Fourth Proportional to 7,865.10, 11,790.36 and 4,164.21

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Solution

The fourth proportional to 7,865.10, 11,790.36 and 4,164.21 is: 6,242.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,865.10 : 11,790.36 = 4,164.21 : x
  2. Step 2: Convert to fraction form
    7,865.10/11,790.36 = 4,164.21/x
  3. Step 3: Cross multiply
    7,865.10x = 11,790.36 × 4,164.21
  4. Step 4: Simplify right side
    7,865.10x = 49,097,535.02
  5. Step 5: Solve for x
    x = 49,097,535.02/7,865.10
  6. Step 6: Final answer
    x = 6,242.46

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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.