Home / 7,838.30-10,815.72-4,480.58

Finding the Fourth Proportional to 7,838.30, 10,815.72 and 4,480.58

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Solution

The fourth proportional to 7,838.30, 10,815.72 and 4,480.58 is: 6,182.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,838.30 : 10,815.72 = 4,480.58 : x
  2. Step 2: Convert to fraction form
    7,838.30/10,815.72 = 4,480.58/x
  3. Step 3: Cross multiply
    7,838.30x = 10,815.72 × 4,480.58
  4. Step 4: Simplify right side
    7,838.30x = 48,460,698.72
  5. Step 5: Solve for x
    x = 48,460,698.72/7,838.30
  6. Step 6: Final answer
    x = 6,182.55

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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.