Home / 7,412.21-10,228.48-5,431.15

Finding the Fourth Proportional to 7,412.21, 10,228.48 and 5,431.15

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Solution

The fourth proportional to 7,412.21, 10,228.48 and 5,431.15 is: 7,494.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,412.21 : 10,228.48 = 5,431.15 : x
  2. Step 2: Convert to fraction form
    7,412.21/10,228.48 = 5,431.15/x
  3. Step 3: Cross multiply
    7,412.21x = 10,228.48 × 5,431.15
  4. Step 4: Simplify right side
    7,412.21x = 55,552,408.36
  5. Step 5: Solve for x
    x = 55,552,408.36/7,412.21
  6. Step 6: Final answer
    x = 7,494.72

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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.