Home / 5,253.60-7,878.78-1,790.04

Finding the Fourth Proportional to 5,253.60, 7,878.78 and 1,790.04

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Solution

The fourth proportional to 5,253.60, 7,878.78 and 1,790.04 is: 2,684.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,253.60 : 7,878.78 = 1,790.04 : x
  2. Step 2: Convert to fraction form
    5,253.60/7,878.78 = 1,790.04/x
  3. Step 3: Cross multiply
    5,253.60x = 7,878.78 × 1,790.04
  4. Step 4: Simplify right side
    5,253.60x = 14,103,331.35
  5. Step 5: Solve for x
    x = 14,103,331.35/5,253.60
  6. Step 6: Final answer
    x = 2,684.51

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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.