Home / 3,818.92-5,280.72-3,031.60

Finding the Fourth Proportional to 3,818.92, 5,280.72 and 3,031.60

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Solution

The fourth proportional to 3,818.92, 5,280.72 and 3,031.60 is: 4,192.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,818.92 : 5,280.72 = 3,031.60 : x
  2. Step 2: Convert to fraction form
    3,818.92/5,280.72 = 3,031.60/x
  3. Step 3: Cross multiply
    3,818.92x = 5,280.72 × 3,031.60
  4. Step 4: Simplify right side
    3,818.92x = 16,009,030.75
  5. Step 5: Solve for x
    x = 16,009,030.75/3,818.92
  6. Step 6: Final answer
    x = 4,192.03

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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.