Home / 7,642.17-11,515.47-6,285.96

Finding the Fourth Proportional to 7,642.17, 11,515.47 and 6,285.96

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Solution

The fourth proportional to 7,642.17, 11,515.47 and 6,285.96 is: 9,471.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,642.17 : 11,515.47 = 6,285.96 : x
  2. Step 2: Convert to fraction form
    7,642.17/11,515.47 = 6,285.96/x
  3. Step 3: Cross multiply
    7,642.17x = 11,515.47 × 6,285.96
  4. Step 4: Simplify right side
    7,642.17x = 72,385,783.80
  5. Step 5: Solve for x
    x = 72,385,783.80/7,642.17
  6. Step 6: Final answer
    x = 9,471.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.