Home / 6,780.36-9,356.80-4,125.90

Finding the Fourth Proportional to 6,780.36, 9,356.80 and 4,125.90

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Solution

The fourth proportional to 6,780.36, 9,356.80 and 4,125.90 is: 5,693.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,780.36 : 9,356.80 = 4,125.90 : x
  2. Step 2: Convert to fraction form
    6,780.36/9,356.80 = 4,125.90/x
  3. Step 3: Cross multiply
    6,780.36x = 9,356.80 × 4,125.90
  4. Step 4: Simplify right side
    6,780.36x = 38,605,221.12
  5. Step 5: Solve for x
    x = 38,605,221.12/6,780.36
  6. Step 6: Final answer
    x = 5,693.68

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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.