Home / 6,521.78-9,784.29-1,904.78

Finding the Fourth Proportional to 6,521.78, 9,784.29 and 1,904.78

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Solution

The fourth proportional to 6,521.78, 9,784.29 and 1,904.78 is: 2,857.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,521.78 : 9,784.29 = 1,904.78 : x
  2. Step 2: Convert to fraction form
    6,521.78/9,784.29 = 1,904.78/x
  3. Step 3: Cross multiply
    6,521.78x = 9,784.29 × 1,904.78
  4. Step 4: Simplify right side
    6,521.78x = 18,636,919.91
  5. Step 5: Solve for x
    x = 18,636,919.91/6,521.78
  6. Step 6: Final answer
    x = 2,857.64

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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.