Home / 9,408.60-12,985.56-5,429.16

Finding the Fourth Proportional to 9,408.60, 12,985.56 and 5,429.16

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Solution

The fourth proportional to 9,408.60, 12,985.56 and 5,429.16 is: 7,493.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,408.60 : 12,985.56 = 5,429.16 : x
  2. Step 2: Convert to fraction form
    9,408.60/12,985.56 = 5,429.16/x
  3. Step 3: Cross multiply
    9,408.60x = 12,985.56 × 5,429.16
  4. Step 4: Simplify right side
    9,408.60x = 70,500,682.93
  5. Step 5: Solve for x
    x = 70,500,682.93/9,408.60
  6. Step 6: Final answer
    x = 7,493.22

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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.