Home / 8,215.40-12,324.70-3,535.40

Finding the Fourth Proportional to 8,215.40, 12,324.70 and 3,535.40

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Solution

The fourth proportional to 8,215.40, 12,324.70 and 3,535.40 is: 5,303.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,215.40 : 12,324.70 = 3,535.40 : x
  2. Step 2: Convert to fraction form
    8,215.40/12,324.70 = 3,535.40/x
  3. Step 3: Cross multiply
    8,215.40x = 12,324.70 × 3,535.40
  4. Step 4: Simplify right side
    8,215.40x = 43,572,744.38
  5. Step 5: Solve for x
    x = 43,572,744.38/8,215.40
  6. Step 6: Final answer
    x = 5,303.79

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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.