Home / 9,355.18-12,909.80-5,163.34

Finding the Fourth Proportional to 9,355.18, 12,909.80 and 5,163.34

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Solution

The fourth proportional to 9,355.18, 12,909.80 and 5,163.34 is: 7,125.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,355.18 : 12,909.80 = 5,163.34 : x
  2. Step 2: Convert to fraction form
    9,355.18/12,909.80 = 5,163.34/x
  3. Step 3: Cross multiply
    9,355.18x = 12,909.80 × 5,163.34
  4. Step 4: Simplify right side
    9,355.18x = 66,657,686.73
  5. Step 5: Solve for x
    x = 66,657,686.73/9,355.18
  6. Step 6: Final answer
    x = 7,125.22

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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.