Home / 6,840.20-9,430.10-4,321.05

Finding the Fourth Proportional to 6,840.20, 9,430.10 and 4,321.05

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Solution

The fourth proportional to 6,840.20, 9,430.10 and 4,321.05 is: 5,957.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,840.20 : 9,430.10 = 4,321.05 : x
  2. Step 2: Convert to fraction form
    6,840.20/9,430.10 = 4,321.05/x
  3. Step 3: Cross multiply
    6,840.20x = 9,430.10 × 4,321.05
  4. Step 4: Simplify right side
    6,840.20x = 40,747,933.61
  5. Step 5: Solve for x
    x = 40,747,933.61/6,840.20
  6. Step 6: Final answer
    x = 5,957.13

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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.