Home / 8,178.74-12,265.67-2,985.02

Finding the Fourth Proportional to 8,178.74, 12,265.67 and 2,985.02

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Solution

The fourth proportional to 8,178.74, 12,265.67 and 2,985.02 is: 4,476.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,178.74 : 12,265.67 = 2,985.02 : x
  2. Step 2: Convert to fraction form
    8,178.74/12,265.67 = 2,985.02/x
  3. Step 3: Cross multiply
    8,178.74x = 12,265.67 × 2,985.02
  4. Step 4: Simplify right side
    8,178.74x = 36,613,216.40
  5. Step 5: Solve for x
    x = 36,613,216.40/8,178.74
  6. Step 6: Final answer
    x = 4,476.64

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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.