Home / 5,816.40-8,721.24-1,919.76

Finding the Fourth Proportional to 5,816.40, 8,721.24 and 1,919.76

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Solution

The fourth proportional to 5,816.40, 8,721.24 and 1,919.76 is: 2,878.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,816.40 : 8,721.24 = 1,919.76 : x
  2. Step 2: Convert to fraction form
    5,816.40/8,721.24 = 1,919.76/x
  3. Step 3: Cross multiply
    5,816.40x = 8,721.24 × 1,919.76
  4. Step 4: Simplify right side
    5,816.40x = 16,742,687.70
  5. Step 5: Solve for x
    x = 16,742,687.70/5,816.40
  6. Step 6: Final answer
    x = 2,878.53

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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.