Home / 7,838.04-10,815.73-4,479.78

Finding the Fourth Proportional to 7,838.04, 10,815.73 and 4,479.78

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Solution

The fourth proportional to 7,838.04, 10,815.73 and 4,479.78 is: 6,181.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,838.04 : 10,815.73 = 4,479.78 : x
  2. Step 2: Convert to fraction form
    7,838.04/10,815.73 = 4,479.78/x
  3. Step 3: Cross multiply
    7,838.04x = 10,815.73 × 4,479.78
  4. Step 4: Simplify right side
    7,838.04x = 48,452,090.94
  5. Step 5: Solve for x
    x = 48,452,090.94/7,838.04
  6. Step 6: Final answer
    x = 6,181.66

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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.