Home / 5,518.47-8,276.90-1,820.79

Finding the Fourth Proportional to 5,518.47, 8,276.90 and 1,820.79

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Solution

The fourth proportional to 5,518.47, 8,276.90 and 1,820.79 is: 2,730.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,518.47 : 8,276.90 = 1,820.79 : x
  2. Step 2: Convert to fraction form
    5,518.47/8,276.90 = 1,820.79/x
  3. Step 3: Cross multiply
    5,518.47x = 8,276.90 × 1,820.79
  4. Step 4: Simplify right side
    5,518.47x = 15,070,487.65
  5. Step 5: Solve for x
    x = 15,070,487.65/5,518.47
  6. Step 6: Final answer
    x = 2,730.92

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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.