Home / 8,178.17-11,285.75-4,821.12

Finding the Fourth Proportional to 8,178.17, 11,285.75 and 4,821.12

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Solution

The fourth proportional to 8,178.17, 11,285.75 and 4,821.12 is: 6,653.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.17 : 11,285.75 = 4,821.12 : x
  2. Step 2: Convert to fraction form
    8,178.17/11,285.75 = 4,821.12/x
  3. Step 3: Cross multiply
    8,178.17x = 11,285.75 × 4,821.12
  4. Step 4: Simplify right side
    8,178.17x = 54,409,967.09
  5. Step 5: Solve for x
    x = 54,409,967.09/8,178.17
  6. Step 6: Final answer
    x = 6,653.08

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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.