Home / 3,852.60-5,778.90-2,807.70

Finding the Fourth Proportional to 3,852.60, 5,778.90 and 2,807.70

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Solution

The fourth proportional to 3,852.60, 5,778.90 and 2,807.70 is: 4,211.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,852.60 : 5,778.90 = 2,807.70 : x
  2. Step 2: Convert to fraction form
    3,852.60/5,778.90 = 2,807.70/x
  3. Step 3: Cross multiply
    3,852.60x = 5,778.90 × 2,807.70
  4. Step 4: Simplify right side
    3,852.60x = 16,225,417.53
  5. Step 5: Solve for x
    x = 16,225,417.53/3,852.60
  6. Step 6: Final answer
    x = 4,211.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.