Home / 9,715.89-13,412.34-6,358.86

Finding the Fourth Proportional to 9,715.89, 13,412.34 and 6,358.86

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Solution

The fourth proportional to 9,715.89, 13,412.34 and 6,358.86 is: 8,778.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,715.89 : 13,412.34 = 6,358.86 : x
  2. Step 2: Convert to fraction form
    9,715.89/13,412.34 = 6,358.86/x
  3. Step 3: Cross multiply
    9,715.89x = 13,412.34 × 6,358.86
  4. Step 4: Simplify right side
    9,715.89x = 85,287,192.33
  5. Step 5: Solve for x
    x = 85,287,192.33/9,715.89
  6. Step 6: Final answer
    x = 8,778.11

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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.