Home / 8,320.34-12,477.04-3,386.64

Finding the Fourth Proportional to 8,320.34, 12,477.04 and 3,386.64

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Solution

The fourth proportional to 8,320.34, 12,477.04 and 3,386.64 is: 5,078.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,320.34 : 12,477.04 = 3,386.64 : x
  2. Step 2: Convert to fraction form
    8,320.34/12,477.04 = 3,386.64/x
  3. Step 3: Cross multiply
    8,320.34x = 12,477.04 × 3,386.64
  4. Step 4: Simplify right side
    8,320.34x = 42,255,242.75
  5. Step 5: Solve for x
    x = 42,255,242.75/8,320.34
  6. Step 6: Final answer
    x = 5,078.55

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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.