Home / 8,631.36-12,911.40-6,535.62

Finding the Fourth Proportional to 8,631.36, 12,911.40 and 6,535.62

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Solution

The fourth proportional to 8,631.36, 12,911.40 and 6,535.62 is: 9,776.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.36 : 12,911.40 = 6,535.62 : x
  2. Step 2: Convert to fraction form
    8,631.36/12,911.40 = 6,535.62/x
  3. Step 3: Cross multiply
    8,631.36x = 12,911.40 × 6,535.62
  4. Step 4: Simplify right side
    8,631.36x = 84,384,004.07
  5. Step 5: Solve for x
    x = 84,384,004.07/8,631.36
  6. Step 6: Final answer
    x = 9,776.44

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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.