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Finding the Fourth Proportional to 6,591.70, 9,879.18 and 6,419.44

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Solution

The fourth proportional to 6,591.70, 9,879.18 and 6,419.44 is: 9,621.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,591.70 : 9,879.18 = 6,419.44 : x
  2. Step 2: Convert to fraction form
    6,591.70/9,879.18 = 6,419.44/x
  3. Step 3: Cross multiply
    6,591.70x = 9,879.18 × 6,419.44
  4. Step 4: Simplify right side
    6,591.70x = 63,418,803.26
  5. Step 5: Solve for x
    x = 63,418,803.26/6,591.70
  6. Step 6: Final answer
    x = 9,621.01

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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.