Home / 5,586.62-7,698.40-3,988.76

Finding the Fourth Proportional to 5,586.62, 7,698.40 and 3,988.76

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Solution

The fourth proportional to 5,586.62, 7,698.40 and 3,988.76 is: 5,496.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,586.62 : 7,698.40 = 3,988.76 : x
  2. Step 2: Convert to fraction form
    5,586.62/7,698.40 = 3,988.76/x
  3. Step 3: Cross multiply
    5,586.62x = 7,698.40 × 3,988.76
  4. Step 4: Simplify right side
    5,586.62x = 30,707,069.98
  5. Step 5: Solve for x
    x = 30,707,069.98/5,586.62
  6. Step 6: Final answer
    x = 5,496.54

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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.