Home / 8,423.67-12,628.64-3,155.72

Finding the Fourth Proportional to 8,423.67, 12,628.64 and 3,155.72

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Solution

The fourth proportional to 8,423.67, 12,628.64 and 3,155.72 is: 4,731.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,423.67 : 12,628.64 = 3,155.72 : x
  2. Step 2: Convert to fraction form
    8,423.67/12,628.64 = 3,155.72/x
  3. Step 3: Cross multiply
    8,423.67x = 12,628.64 × 3,155.72
  4. Step 4: Simplify right side
    8,423.67x = 39,852,491.28
  5. Step 5: Solve for x
    x = 39,852,491.28/8,423.67
  6. Step 6: Final answer
    x = 4,731.01

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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.