Home / 8,378.64-12,570.39-3,445.74

Finding the Fourth Proportional to 8,378.64, 12,570.39 and 3,445.74

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Solution

The fourth proportional to 8,378.64, 12,570.39 and 3,445.74 is: 5,169.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,378.64 : 12,570.39 = 3,445.74 : x
  2. Step 2: Convert to fraction form
    8,378.64/12,570.39 = 3,445.74/x
  3. Step 3: Cross multiply
    8,378.64x = 12,570.39 × 3,445.74
  4. Step 4: Simplify right side
    8,378.64x = 43,314,295.64
  5. Step 5: Solve for x
    x = 43,314,295.64/8,378.64
  6. Step 6: Final answer
    x = 5,169.61

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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.