Home / 7,627.17-11,385.80-6,642.75

Finding the Fourth Proportional to 7,627.17, 11,385.80 and 6,642.75

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Solution

The fourth proportional to 7,627.17, 11,385.80 and 6,642.75 is: 9,916.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,627.17 : 11,385.80 = 6,642.75 : x
  2. Step 2: Convert to fraction form
    7,627.17/11,385.80 = 6,642.75/x
  3. Step 3: Cross multiply
    7,627.17x = 11,385.80 × 6,642.75
  4. Step 4: Simplify right side
    7,627.17x = 75,633,039.56
  5. Step 5: Solve for x
    x = 75,633,039.56/7,627.17
  6. Step 6: Final answer
    x = 9,916.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.