Home / 5,478.68-7,561.32-3,121.04

Finding the Fourth Proportional to 5,478.68, 7,561.32 and 3,121.04

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Solution

The fourth proportional to 5,478.68, 7,561.32 and 3,121.04 is: 4,307.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,478.68 : 7,561.32 = 3,121.04 : x
  2. Step 2: Convert to fraction form
    5,478.68/7,561.32 = 3,121.04/x
  3. Step 3: Cross multiply
    5,478.68x = 7,561.32 × 3,121.04
  4. Step 4: Simplify right side
    5,478.68x = 23,599,182.17
  5. Step 5: Solve for x
    x = 23,599,182.17/5,478.68
  6. Step 6: Final answer
    x = 4,307.46

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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.