Home / 6,521.60-9,781.36-2,078.69

Finding the Fourth Proportional to 6,521.60, 9,781.36 and 2,078.69

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Solution

The fourth proportional to 6,521.60, 9,781.36 and 2,078.69 is: 3,117.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,521.60 : 9,781.36 = 2,078.69 : x
  2. Step 2: Convert to fraction form
    6,521.60/9,781.36 = 2,078.69/x
  3. Step 3: Cross multiply
    6,521.60x = 9,781.36 × 2,078.69
  4. Step 4: Simplify right side
    6,521.60x = 20,332,415.22
  5. Step 5: Solve for x
    x = 20,332,415.22/6,521.60
  6. Step 6: Final answer
    x = 3,117.70

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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.