Home / 5,616.08-7,747.80-4,121.40

Finding the Fourth Proportional to 5,616.08, 7,747.80 and 4,121.40

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Solution

The fourth proportional to 5,616.08, 7,747.80 and 4,121.40 is: 5,685.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,616.08 : 7,747.80 = 4,121.40 : x
  2. Step 2: Convert to fraction form
    5,616.08/7,747.80 = 4,121.40/x
  3. Step 3: Cross multiply
    5,616.08x = 7,747.80 × 4,121.40
  4. Step 4: Simplify right side
    5,616.08x = 31,931,782.92
  5. Step 5: Solve for x
    x = 31,931,782.92/5,616.08
  6. Step 6: Final answer
    x = 5,685.78

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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.