Home / 5,130.41-7,082.34-3,005.65

Finding the Fourth Proportional to 5,130.41, 7,082.34 and 3,005.65

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Solution

The fourth proportional to 5,130.41, 7,082.34 and 3,005.65 is: 4,149.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.41 : 7,082.34 = 3,005.65 : x
  2. Step 2: Convert to fraction form
    5,130.41/7,082.34 = 3,005.65/x
  3. Step 3: Cross multiply
    5,130.41x = 7,082.34 × 3,005.65
  4. Step 4: Simplify right side
    5,130.41x = 21,287,035.22
  5. Step 5: Solve for x
    x = 21,287,035.22/5,130.41
  6. Step 6: Final answer
    x = 4,149.19

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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.