Home / 8,972.80-13,457.92-2,816

Finding the Fourth Proportional to 8,972.80, 13,457.92 and 2,816

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Solution

The fourth proportional to 8,972.80, 13,457.92 and 2,816 is: 4,223.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972.80 : 13,457.92 = 2,816 : x
  2. Step 2: Convert to fraction form
    8,972.80/13,457.92 = 2,816/x
  3. Step 3: Cross multiply
    8,972.80x = 13,457.92 × 2,816
  4. Step 4: Simplify right side
    8,972.80x = 37,897,502.72
  5. Step 5: Solve for x
    x = 37,897,502.72/8,972.80
  6. Step 6: Final answer
    x = 4,223.60

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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.