Home / 8,430.15-12,635.37-6,343.47

Finding the Fourth Proportional to 8,430.15, 12,635.37 and 6,343.47

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Solution

The fourth proportional to 8,430.15, 12,635.37 and 6,343.47 is: 9,507.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,430.15 : 12,635.37 = 6,343.47 : x
  2. Step 2: Convert to fraction form
    8,430.15/12,635.37 = 6,343.47/x
  3. Step 3: Cross multiply
    8,430.15x = 12,635.37 × 6,343.47
  4. Step 4: Simplify right side
    8,430.15x = 80,152,090.53
  5. Step 5: Solve for x
    x = 80,152,090.53/8,430.15
  6. Step 6: Final answer
    x = 9,507.79

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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.