Home / 5,430.74-8,105.07-4,905.86

Finding the Fourth Proportional to 5,430.74, 8,105.07 and 4,905.86

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Solution

The fourth proportional to 5,430.74, 8,105.07 and 4,905.86 is: 7,321.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,430.74 : 8,105.07 = 4,905.86 : x
  2. Step 2: Convert to fraction form
    5,430.74/8,105.07 = 4,905.86/x
  3. Step 3: Cross multiply
    5,430.74x = 8,105.07 × 4,905.86
  4. Step 4: Simplify right side
    5,430.74x = 39,762,298.18
  5. Step 5: Solve for x
    x = 39,762,298.18/5,430.74
  6. Step 6: Final answer
    x = 7,321.72

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.