Home / 9,929.78-13,703.06-5,622.80

Finding the Fourth Proportional to 9,929.78, 13,703.06 and 5,622.80

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Solution

The fourth proportional to 9,929.78, 13,703.06 and 5,622.80 is: 7,759.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,929.78 : 13,703.06 = 5,622.80 : x
  2. Step 2: Convert to fraction form
    9,929.78/13,703.06 = 5,622.80/x
  3. Step 3: Cross multiply
    9,929.78x = 13,703.06 × 5,622.80
  4. Step 4: Simplify right side
    9,929.78x = 77,049,565.77
  5. Step 5: Solve for x
    x = 77,049,565.77/9,929.78
  6. Step 6: Final answer
    x = 7,759.44

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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.