Home / 3,528.14-5,291.66-931.28

Finding the Fourth Proportional to 3,528.14, 5,291.66 and 931.28

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Solution

The fourth proportional to 3,528.14, 5,291.66 and 931.28 is: 1,396.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,528.14 : 5,291.66 = 931.28 : x
  2. Step 2: Convert to fraction form
    3,528.14/5,291.66 = 931.28/x
  3. Step 3: Cross multiply
    3,528.14x = 5,291.66 × 931.28
  4. Step 4: Simplify right side
    3,528.14x = 4,928,017.12
  5. Step 5: Solve for x
    x = 4,928,017.12/3,528.14
  6. Step 6: Final answer
    x = 1,396.77

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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.