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Finding the Fourth Proportional to 6,820.52, 9,410.05 and 5,559.40

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Solution

The fourth proportional to 6,820.52, 9,410.05 and 5,559.40 is: 7,670.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,820.52 : 9,410.05 = 5,559.40 : x
  2. Step 2: Convert to fraction form
    6,820.52/9,410.05 = 5,559.40/x
  3. Step 3: Cross multiply
    6,820.52x = 9,410.05 × 5,559.40
  4. Step 4: Simplify right side
    6,820.52x = 52,314,231.97
  5. Step 5: Solve for x
    x = 52,314,231.97/6,820.52
  6. Step 6: Final answer
    x = 7,670.12

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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.