Home / 8,211.04-12,320.16-3,018.40

Finding the Fourth Proportional to 8,211.04, 12,320.16 and 3,018.40

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Solution

The fourth proportional to 8,211.04, 12,320.16 and 3,018.40 is: 4,528.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,211.04 : 12,320.16 = 3,018.40 : x
  2. Step 2: Convert to fraction form
    8,211.04/12,320.16 = 3,018.40/x
  3. Step 3: Cross multiply
    8,211.04x = 12,320.16 × 3,018.40
  4. Step 4: Simplify right side
    8,211.04x = 37,187,170.94
  5. Step 5: Solve for x
    x = 37,187,170.94/8,211.04
  6. Step 6: Final answer
    x = 4,528.92

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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.