Home / 8,378.10-12,568.97-2,455.47

Finding the Fourth Proportional to 8,378.10, 12,568.97 and 2,455.47

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Solution

The fourth proportional to 8,378.10, 12,568.97 and 2,455.47 is: 3,683.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,378.10 : 12,568.97 = 2,455.47 : x
  2. Step 2: Convert to fraction form
    8,378.10/12,568.97 = 2,455.47/x
  3. Step 3: Cross multiply
    8,378.10x = 12,568.97 × 2,455.47
  4. Step 4: Simplify right side
    8,378.10x = 30,862,728.77
  5. Step 5: Solve for x
    x = 30,862,728.77/8,378.10
  6. Step 6: Final answer
    x = 3,683.74

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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.