Home / 5,345.78-8,021.69-2,880.54

Finding the Fourth Proportional to 5,345.78, 8,021.69 and 2,880.54

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Solution

The fourth proportional to 5,345.78, 8,021.69 and 2,880.54 is: 4,322.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,345.78 : 8,021.69 = 2,880.54 : x
  2. Step 2: Convert to fraction form
    5,345.78/8,021.69 = 2,880.54/x
  3. Step 3: Cross multiply
    5,345.78x = 8,021.69 × 2,880.54
  4. Step 4: Simplify right side
    5,345.78x = 23,106,798.91
  5. Step 5: Solve for x
    x = 23,106,798.91/5,345.78
  6. Step 6: Final answer
    x = 4,322.44

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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.