Home / 3,685.60-5,528.40-2,810.80

Finding the Fourth Proportional to 3,685.60, 5,528.40 and 2,810.80

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Solution

The fourth proportional to 3,685.60, 5,528.40 and 2,810.80 is: 4,216.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,685.60 : 5,528.40 = 2,810.80 : x
  2. Step 2: Convert to fraction form
    3,685.60/5,528.40 = 2,810.80/x
  3. Step 3: Cross multiply
    3,685.60x = 5,528.40 × 2,810.80
  4. Step 4: Simplify right side
    3,685.60x = 15,539,226.72
  5. Step 5: Solve for x
    x = 15,539,226.72/3,685.60
  6. Step 6: Final answer
    x = 4,216.20

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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.