Home / 7,715.98-11,567.49-5,243.86

Finding the Fourth Proportional to 7,715.98, 11,567.49 and 5,243.86

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Solution

The fourth proportional to 7,715.98, 11,567.49 and 5,243.86 is: 7,861.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.98 : 11,567.49 = 5,243.86 : x
  2. Step 2: Convert to fraction form
    7,715.98/11,567.49 = 5,243.86/x
  3. Step 3: Cross multiply
    7,715.98x = 11,567.49 × 5,243.86
  4. Step 4: Simplify right side
    7,715.98x = 60,658,298.11
  5. Step 5: Solve for x
    x = 60,658,298.11/7,715.98
  6. Step 6: Final answer
    x = 7,861.39

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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.