Home / 5,134.40-7,701.60-1,238.81

Finding the Fourth Proportional to 5,134.40, 7,701.60 and 1,238.81

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Solution

The fourth proportional to 5,134.40, 7,701.60 and 1,238.81 is: 1,858.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,134.40 : 7,701.60 = 1,238.81 : x
  2. Step 2: Convert to fraction form
    5,134.40/7,701.60 = 1,238.81/x
  3. Step 3: Cross multiply
    5,134.40x = 7,701.60 × 1,238.81
  4. Step 4: Simplify right side
    5,134.40x = 9,540,819.10
  5. Step 5: Solve for x
    x = 9,540,819.10/5,134.40
  6. Step 6: Final answer
    x = 1,858.22

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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.