Home / 7,929.90-10,939.83-4,784.28

Finding the Fourth Proportional to 7,929.90, 10,939.83 and 4,784.28

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Solution

The fourth proportional to 7,929.90, 10,939.83 and 4,784.28 is: 6,600.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,929.90 : 10,939.83 = 4,784.28 : x
  2. Step 2: Convert to fraction form
    7,929.90/10,939.83 = 4,784.28/x
  3. Step 3: Cross multiply
    7,929.90x = 10,939.83 × 4,784.28
  4. Step 4: Simplify right side
    7,929.90x = 52,339,209.87
  5. Step 5: Solve for x
    x = 52,339,209.87/7,929.90
  6. Step 6: Final answer
    x = 6,600.24

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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.