Home / 5,551.15-7,658.40-3,561.40

Finding the Fourth Proportional to 5,551.15, 7,658.40 and 3,561.40

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Solution

The fourth proportional to 5,551.15, 7,658.40 and 3,561.40 is: 4,913.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,551.15 : 7,658.40 = 3,561.40 : x
  2. Step 2: Convert to fraction form
    5,551.15/7,658.40 = 3,561.40/x
  3. Step 3: Cross multiply
    5,551.15x = 7,658.40 × 3,561.40
  4. Step 4: Simplify right side
    5,551.15x = 27,274,625.76
  5. Step 5: Solve for x
    x = 27,274,625.76/5,551.15
  6. Step 6: Final answer
    x = 4,913.33

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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.