Home / 8,320.16-12,476.76-3,386.45

Finding the Fourth Proportional to 8,320.16, 12,476.76 and 3,386.45

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Solution

The fourth proportional to 8,320.16, 12,476.76 and 3,386.45 is: 5,078.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.16 : 12,476.76 = 3,386.45 : x
  2. Step 2: Convert to fraction form
    8,320.16/12,476.76 = 3,386.45/x
  3. Step 3: Cross multiply
    8,320.16x = 12,476.76 × 3,386.45
  4. Step 4: Simplify right side
    8,320.16x = 42,251,861.52
  5. Step 5: Solve for x
    x = 42,251,861.52/8,320.16
  6. Step 6: Final answer
    x = 5,078.25

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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.