Home / 8,955.87-12,360.45-6,446.28

Finding the Fourth Proportional to 8,955.87, 12,360.45 and 6,446.28

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Solution

The fourth proportional to 8,955.87, 12,360.45 and 6,446.28 is: 8,896.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,955.87 : 12,360.45 = 6,446.28 : x
  2. Step 2: Convert to fraction form
    8,955.87/12,360.45 = 6,446.28/x
  3. Step 3: Cross multiply
    8,955.87x = 12,360.45 × 6,446.28
  4. Step 4: Simplify right side
    8,955.87x = 79,678,955.89
  5. Step 5: Solve for x
    x = 79,678,955.89/8,955.87
  6. Step 6: Final answer
    x = 8,896.85

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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.