Home / 4,771.72-7,157.40-1,309.08

Finding the Fourth Proportional to 4,771.72, 7,157.40 and 1,309.08

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Solution

The fourth proportional to 4,771.72, 7,157.40 and 1,309.08 is: 1,963.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,771.72 : 7,157.40 = 1,309.08 : x
  2. Step 2: Convert to fraction form
    4,771.72/7,157.40 = 1,309.08/x
  3. Step 3: Cross multiply
    4,771.72x = 7,157.40 × 1,309.08
  4. Step 4: Simplify right side
    4,771.72x = 9,369,609.19
  5. Step 5: Solve for x
    x = 9,369,609.19/4,771.72
  6. Step 6: Final answer
    x = 1,963.57

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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.