Home / 5,242.72-7,858.16-2,320.64

Finding the Fourth Proportional to 5,242.72, 7,858.16 and 2,320.64

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Solution

The fourth proportional to 5,242.72, 7,858.16 and 2,320.64 is: 3,478.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,242.72 : 7,858.16 = 2,320.64 : x
  2. Step 2: Convert to fraction form
    5,242.72/7,858.16 = 2,320.64/x
  3. Step 3: Cross multiply
    5,242.72x = 7,858.16 × 2,320.64
  4. Step 4: Simplify right side
    5,242.72x = 18,235,960.42
  5. Step 5: Solve for x
    x = 18,235,960.42/5,242.72
  6. Step 6: Final answer
    x = 3,478.34

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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.