Home / 4,751.20-6,541.78-3,909.20

Finding the Fourth Proportional to 4,751.20, 6,541.78 and 3,909.20

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Solution

The fourth proportional to 4,751.20, 6,541.78 and 3,909.20 is: 5,382.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,751.20 : 6,541.78 = 3,909.20 : x
  2. Step 2: Convert to fraction form
    4,751.20/6,541.78 = 3,909.20/x
  3. Step 3: Cross multiply
    4,751.20x = 6,541.78 × 3,909.20
  4. Step 4: Simplify right side
    4,751.20x = 25,573,106.83
  5. Step 5: Solve for x
    x = 25,573,106.83/4,751.20
  6. Step 6: Final answer
    x = 5,382.46

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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.