Home / 4,280.42-6,419.08-1,815.40

Finding the Fourth Proportional to 4,280.42, 6,419.08 and 1,815.40

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Solution

The fourth proportional to 4,280.42, 6,419.08 and 1,815.40 is: 2,722.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,280.42 : 6,419.08 = 1,815.40 : x
  2. Step 2: Convert to fraction form
    4,280.42/6,419.08 = 1,815.40/x
  3. Step 3: Cross multiply
    4,280.42x = 6,419.08 × 1,815.40
  4. Step 4: Simplify right side
    4,280.42x = 11,653,197.83
  5. Step 5: Solve for x
    x = 11,653,197.83/4,280.42
  6. Step 6: Final answer
    x = 2,722.44

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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.