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Finding the Fourth Proportional to 4,774.86, 7,155.37 and 3,390.91

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Solution

The fourth proportional to 4,774.86, 7,155.37 and 3,390.91 is: 5,081.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,774.86 : 7,155.37 = 3,390.91 : x
  2. Step 2: Convert to fraction form
    4,774.86/7,155.37 = 3,390.91/x
  3. Step 3: Cross multiply
    4,774.86x = 7,155.37 × 3,390.91
  4. Step 4: Simplify right side
    4,774.86x = 24,263,215.69
  5. Step 5: Solve for x
    x = 24,263,215.69/4,774.86
  6. Step 6: Final answer
    x = 5,081.45

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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.