Home / 7,565.36-10,431.78-5,175.72

Finding the Fourth Proportional to 7,565.36, 10,431.78 and 5,175.72

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Solution

The fourth proportional to 7,565.36, 10,431.78 and 5,175.72 is: 7,136.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,565.36 : 10,431.78 = 5,175.72 : x
  2. Step 2: Convert to fraction form
    7,565.36/10,431.78 = 5,175.72/x
  3. Step 3: Cross multiply
    7,565.36x = 10,431.78 × 5,175.72
  4. Step 4: Simplify right side
    7,565.36x = 53,991,972.38
  5. Step 5: Solve for x
    x = 53,991,972.38/7,565.36
  6. Step 6: Final answer
    x = 7,136.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.