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Finding the Fourth Proportional to 6,509.55, 8,980.77 and 4,272.69

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Solution

The fourth proportional to 6,509.55, 8,980.77 and 4,272.69 is: 5,894.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,509.55 : 8,980.77 = 4,272.69 : x
  2. Step 2: Convert to fraction form
    6,509.55/8,980.77 = 4,272.69/x
  3. Step 3: Cross multiply
    6,509.55x = 8,980.77 × 4,272.69
  4. Step 4: Simplify right side
    6,509.55x = 38,372,046.17
  5. Step 5: Solve for x
    x = 38,372,046.17/6,509.55
  6. Step 6: Final answer
    x = 5,894.73

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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.