Home / 7,645.86-10,569-6,379.56

Finding the Fourth Proportional to 7,645.86, 10,569 and 6,379.56

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Solution

The fourth proportional to 7,645.86, 10,569 and 6,379.56 is: 8,818.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,645.86 : 10,569 = 6,379.56 : x
  2. Step 2: Convert to fraction form
    7,645.86/10,569 = 6,379.56/x
  3. Step 3: Cross multiply
    7,645.86x = 10,569 × 6,379.56
  4. Step 4: Simplify right side
    7,645.86x = 67,425,569.64
  5. Step 5: Solve for x
    x = 67,425,569.64/7,645.86
  6. Step 6: Final answer
    x = 8,818.57

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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.