Home / 5,389.68-7,435.47-3,894.33

Finding the Fourth Proportional to 5,389.68, 7,435.47 and 3,894.33

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Solution

The fourth proportional to 5,389.68, 7,435.47 and 3,894.33 is: 5,372.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,389.68 : 7,435.47 = 3,894.33 : x
  2. Step 2: Convert to fraction form
    5,389.68/7,435.47 = 3,894.33/x
  3. Step 3: Cross multiply
    5,389.68x = 7,435.47 × 3,894.33
  4. Step 4: Simplify right side
    5,389.68x = 28,956,173.89
  5. Step 5: Solve for x
    x = 28,956,173.89/5,389.68
  6. Step 6: Final answer
    x = 5,372.52

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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.