Home / 5,815.60-8,724.30-1,918.84

Finding the Fourth Proportional to 5,815.60, 8,724.30 and 1,918.84

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Solution

The fourth proportional to 5,815.60, 8,724.30 and 1,918.84 is: 2,878.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,815.60 : 8,724.30 = 1,918.84 : x
  2. Step 2: Convert to fraction form
    5,815.60/8,724.30 = 1,918.84/x
  3. Step 3: Cross multiply
    5,815.60x = 8,724.30 × 1,918.84
  4. Step 4: Simplify right side
    5,815.60x = 16,740,535.81
  5. Step 5: Solve for x
    x = 16,740,535.81/5,815.60
  6. Step 6: Final answer
    x = 2,878.56

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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.