Home / 5,129.19-7,693.79-1,619.47

Finding the Fourth Proportional to 5,129.19, 7,693.79 and 1,619.47

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Solution

The fourth proportional to 5,129.19, 7,693.79 and 1,619.47 is: 2,429.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.19 : 7,693.79 = 1,619.47 : x
  2. Step 2: Convert to fraction form
    5,129.19/7,693.79 = 1,619.47/x
  3. Step 3: Cross multiply
    5,129.19x = 7,693.79 × 1,619.47
  4. Step 4: Simplify right side
    5,129.19x = 12,459,863.61
  5. Step 5: Solve for x
    x = 12,459,863.61/5,129.19
  6. Step 6: Final answer
    x = 2,429.21

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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.