Home / 3,478.12-4,800.05-2,152.59

Finding the Fourth Proportional to 3,478.12, 4,800.05 and 2,152.59

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Solution

The fourth proportional to 3,478.12, 4,800.05 and 2,152.59 is: 2,970.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.12 : 4,800.05 = 2,152.59 : x
  2. Step 2: Convert to fraction form
    3,478.12/4,800.05 = 2,152.59/x
  3. Step 3: Cross multiply
    3,478.12x = 4,800.05 × 2,152.59
  4. Step 4: Simplify right side
    3,478.12x = 10,332,518.94
  5. Step 5: Solve for x
    x = 10,332,518.94/3,478.12
  6. Step 6: Final answer
    x = 2,970.72

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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.