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Finding the Fourth Proportional to 6,484.96, 8,945.37 and 4,090.70

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Solution

The fourth proportional to 6,484.96, 8,945.37 and 4,090.70 is: 5,642.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,484.96 : 8,945.37 = 4,090.70 : x
  2. Step 2: Convert to fraction form
    6,484.96/8,945.37 = 4,090.70/x
  3. Step 3: Cross multiply
    6,484.96x = 8,945.37 × 4,090.70
  4. Step 4: Simplify right side
    6,484.96x = 36,592,825.06
  5. Step 5: Solve for x
    x = 36,592,825.06/6,484.96
  6. Step 6: Final answer
    x = 5,642.72

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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.