Home / 5,214.78-7,816.65-2,439.12

Finding the Fourth Proportional to 5,214.78, 7,816.65 and 2,439.12

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Solution

The fourth proportional to 5,214.78, 7,816.65 and 2,439.12 is: 3,656.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,214.78 : 7,816.65 = 2,439.12 : x
  2. Step 2: Convert to fraction form
    5,214.78/7,816.65 = 2,439.12/x
  3. Step 3: Cross multiply
    5,214.78x = 7,816.65 × 2,439.12
  4. Step 4: Simplify right side
    5,214.78x = 19,065,747.35
  5. Step 5: Solve for x
    x = 19,065,747.35/5,214.78
  6. Step 6: Final answer
    x = 3,656.10

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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.