Home / 5,355.80-7,390.50-3,117.62

Finding the Fourth Proportional to 5,355.80, 7,390.50 and 3,117.62

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Solution

The fourth proportional to 5,355.80, 7,390.50 and 3,117.62 is: 4,302.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,355.80 : 7,390.50 = 3,117.62 : x
  2. Step 2: Convert to fraction form
    5,355.80/7,390.50 = 3,117.62/x
  3. Step 3: Cross multiply
    5,355.80x = 7,390.50 × 3,117.62
  4. Step 4: Simplify right side
    5,355.80x = 23,040,770.61
  5. Step 5: Solve for x
    x = 23,040,770.61/5,355.80
  6. Step 6: Final answer
    x = 4,302.02

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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.