Home / 5,251.28-7,878.14-1,788.56

Finding the Fourth Proportional to 5,251.28, 7,878.14 and 1,788.56

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Solution

The fourth proportional to 5,251.28, 7,878.14 and 1,788.56 is: 2,683.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,251.28 : 7,878.14 = 1,788.56 : x
  2. Step 2: Convert to fraction form
    5,251.28/7,878.14 = 1,788.56/x
  3. Step 3: Cross multiply
    5,251.28x = 7,878.14 × 1,788.56
  4. Step 4: Simplify right side
    5,251.28x = 14,090,526.08
  5. Step 5: Solve for x
    x = 14,090,526.08/5,251.28
  6. Step 6: Final answer
    x = 2,683.26

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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.