Home / 6,125.60-8,456.40-5,127.20

Finding the Fourth Proportional to 6,125.60, 8,456.40 and 5,127.20

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Solution

The fourth proportional to 6,125.60, 8,456.40 and 5,127.20 is: 7,078.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,125.60 : 8,456.40 = 5,127.20 : x
  2. Step 2: Convert to fraction form
    6,125.60/8,456.40 = 5,127.20/x
  3. Step 3: Cross multiply
    6,125.60x = 8,456.40 × 5,127.20
  4. Step 4: Simplify right side
    6,125.60x = 43,357,654.08
  5. Step 5: Solve for x
    x = 43,357,654.08/6,125.60
  6. Step 6: Final answer
    x = 7,078.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.