Home / 7,736.50-10,666.40-6,318.69

Finding the Fourth Proportional to 7,736.50, 10,666.40 and 6,318.69

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Solution

The fourth proportional to 7,736.50, 10,666.40 and 6,318.69 is: 8,711.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,736.50 : 10,666.40 = 6,318.69 : x
  2. Step 2: Convert to fraction form
    7,736.50/10,666.40 = 6,318.69/x
  3. Step 3: Cross multiply
    7,736.50x = 10,666.40 × 6,318.69
  4. Step 4: Simplify right side
    7,736.50x = 67,397,675.02
  5. Step 5: Solve for x
    x = 67,397,675.02/7,736.50
  6. Step 6: Final answer
    x = 8,711.65

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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.