Home / 8,179.29-12,270.75-2,985.16

Finding the Fourth Proportional to 8,179.29, 12,270.75 and 2,985.16

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Solution

The fourth proportional to 8,179.29, 12,270.75 and 2,985.16 is: 4,478.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,179.29 : 12,270.75 = 2,985.16 : x
  2. Step 2: Convert to fraction form
    8,179.29/12,270.75 = 2,985.16/x
  3. Step 3: Cross multiply
    8,179.29x = 12,270.75 × 2,985.16
  4. Step 4: Simplify right side
    8,179.29x = 36,630,152.07
  5. Step 5: Solve for x
    x = 36,630,152.07/8,179.29
  6. Step 6: Final answer
    x = 4,478.40

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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.