Home / 8,431.32-12,630.78-4,722.30

Finding the Fourth Proportional to 8,431.32, 12,630.78 and 4,722.30

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Solution

The fourth proportional to 8,431.32, 12,630.78 and 4,722.30 is: 7,074.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.32 : 12,630.78 = 4,722.30 : x
  2. Step 2: Convert to fraction form
    8,431.32/12,630.78 = 4,722.30/x
  3. Step 3: Cross multiply
    8,431.32x = 12,630.78 × 4,722.30
  4. Step 4: Simplify right side
    8,431.32x = 59,646,332.39
  5. Step 5: Solve for x
    x = 59,646,332.39/8,431.32
  6. Step 6: Final answer
    x = 7,074.38

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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.