Home / 6,784.80-10,177.20-5,121.60

Finding the Fourth Proportional to 6,784.80, 10,177.20 and 5,121.60

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Solution

The fourth proportional to 6,784.80, 10,177.20 and 5,121.60 is: 7,682.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,784.80 : 10,177.20 = 5,121.60 : x
  2. Step 2: Convert to fraction form
    6,784.80/10,177.20 = 5,121.60/x
  3. Step 3: Cross multiply
    6,784.80x = 10,177.20 × 5,121.60
  4. Step 4: Simplify right side
    6,784.80x = 52,123,547.52
  5. Step 5: Solve for x
    x = 52,123,547.52/6,784.80
  6. Step 6: Final answer
    x = 7,682.40

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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.