Home / 8,195.72-11,303.70-5,678.78

Finding the Fourth Proportional to 8,195.72, 11,303.70 and 5,678.78

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Solution

The fourth proportional to 8,195.72, 11,303.70 and 5,678.78 is: 7,832.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,195.72 : 11,303.70 = 5,678.78 : x
  2. Step 2: Convert to fraction form
    8,195.72/11,303.70 = 5,678.78/x
  3. Step 3: Cross multiply
    8,195.72x = 11,303.70 × 5,678.78
  4. Step 4: Simplify right side
    8,195.72x = 64,191,225.49
  5. Step 5: Solve for x
    x = 64,191,225.49/8,195.72
  6. Step 6: Final answer
    x = 7,832.29

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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.