Home / 5,855.40-8,778.96-2,931.60

Finding the Fourth Proportional to 5,855.40, 8,778.96 and 2,931.60

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Solution

The fourth proportional to 5,855.40, 8,778.96 and 2,931.60 is: 4,395.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,855.40 : 8,778.96 = 2,931.60 : x
  2. Step 2: Convert to fraction form
    5,855.40/8,778.96 = 2,931.60/x
  3. Step 3: Cross multiply
    5,855.40x = 8,778.96 × 2,931.60
  4. Step 4: Simplify right side
    5,855.40x = 25,736,399.14
  5. Step 5: Solve for x
    x = 25,736,399.14/5,855.40
  6. Step 6: Final answer
    x = 4,395.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.