Home / 5,160.16-7,122.48-3,065.76

Finding the Fourth Proportional to 5,160.16, 7,122.48 and 3,065.76

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Solution

The fourth proportional to 5,160.16, 7,122.48 and 3,065.76 is: 4,231.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,160.16 : 7,122.48 = 3,065.76 : x
  2. Step 2: Convert to fraction form
    5,160.16/7,122.48 = 3,065.76/x
  3. Step 3: Cross multiply
    5,160.16x = 7,122.48 × 3,065.76
  4. Step 4: Simplify right side
    5,160.16x = 21,835,814.28
  5. Step 5: Solve for x
    x = 21,835,814.28/5,160.16
  6. Step 6: Final answer
    x = 4,231.62

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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.