Home / 8,320.41-12,477.14-3,386.70

Finding the Fourth Proportional to 8,320.41, 12,477.14 and 3,386.70

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Solution

The fourth proportional to 8,320.41, 12,477.14 and 3,386.70 is: 5,078.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.41 : 12,477.14 = 3,386.70 : x
  2. Step 2: Convert to fraction form
    8,320.41/12,477.14 = 3,386.70/x
  3. Step 3: Cross multiply
    8,320.41x = 12,477.14 × 3,386.70
  4. Step 4: Simplify right side
    8,320.41x = 42,256,313.10
  5. Step 5: Solve for x
    x = 42,256,313.10/8,320.41
  6. Step 6: Final answer
    x = 5,078.63

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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.