Home / 5,516.80-8,276.40-1,818.40

Finding the Fourth Proportional to 5,516.80, 8,276.40 and 1,818.40

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Solution

The fourth proportional to 5,516.80, 8,276.40 and 1,818.40 is: 2,728.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,516.80 : 8,276.40 = 1,818.40 : x
  2. Step 2: Convert to fraction form
    5,516.80/8,276.40 = 1,818.40/x
  3. Step 3: Cross multiply
    5,516.80x = 8,276.40 × 1,818.40
  4. Step 4: Simplify right side
    5,516.80x = 15,049,805.76
  5. Step 5: Solve for x
    x = 15,049,805.76/5,516.80
  6. Step 6: Final answer
    x = 2,728.00

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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.