Home / 7,478.28-11,217.40-3,528.23

Finding the Fourth Proportional to 7,478.28, 11,217.40 and 3,528.23

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Solution

The fourth proportional to 7,478.28, 11,217.40 and 3,528.23 is: 5,292.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,478.28 : 11,217.40 = 3,528.23 : x
  2. Step 2: Convert to fraction form
    7,478.28/11,217.40 = 3,528.23/x
  3. Step 3: Cross multiply
    7,478.28x = 11,217.40 × 3,528.23
  4. Step 4: Simplify right side
    7,478.28x = 39,577,502.29
  5. Step 5: Solve for x
    x = 39,577,502.29/7,478.28
  6. Step 6: Final answer
    x = 5,292.33

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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.