Home / 8,920.89-13,364.06-6,864.57

Finding the Fourth Proportional to 8,920.89, 13,364.06 and 6,864.57

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Solution

The fourth proportional to 8,920.89, 13,364.06 and 6,864.57 is: 10,283.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,920.89 : 13,364.06 = 6,864.57 : x
  2. Step 2: Convert to fraction form
    8,920.89/13,364.06 = 6,864.57/x
  3. Step 3: Cross multiply
    8,920.89x = 13,364.06 × 6,864.57
  4. Step 4: Simplify right side
    8,920.89x = 91,738,491.03
  5. Step 5: Solve for x
    x = 91,738,491.03/8,920.89
  6. Step 6: Final answer
    x = 10,283.56

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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.