Home / 3,431.29-5,134.63-2,970.65

Finding the Fourth Proportional to 3,431.29, 5,134.63 and 2,970.65

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Solution

The fourth proportional to 3,431.29, 5,134.63 and 2,970.65 is: 4,445.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.29 : 5,134.63 = 2,970.65 : x
  2. Step 2: Convert to fraction form
    3,431.29/5,134.63 = 2,970.65/x
  3. Step 3: Cross multiply
    3,431.29x = 5,134.63 × 2,970.65
  4. Step 4: Simplify right side
    3,431.29x = 15,253,188.61
  5. Step 5: Solve for x
    x = 15,253,188.61/3,431.29
  6. Step 6: Final answer
    x = 4,445.32

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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.