Home / 5,445.91-7,512.78-3,678.13

Finding the Fourth Proportional to 5,445.91, 7,512.78 and 3,678.13

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Solution

The fourth proportional to 5,445.91, 7,512.78 and 3,678.13 is: 5,074.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,445.91 : 7,512.78 = 3,678.13 : x
  2. Step 2: Convert to fraction form
    5,445.91/7,512.78 = 3,678.13/x
  3. Step 3: Cross multiply
    5,445.91x = 7,512.78 × 3,678.13
  4. Step 4: Simplify right side
    5,445.91x = 27,632,981.50
  5. Step 5: Solve for x
    x = 27,632,981.50/5,445.91
  6. Step 6: Final answer
    x = 5,074.08

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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.