Home / 5,428.52-8,128.68-4,653.48

Finding the Fourth Proportional to 5,428.52, 8,128.68 and 4,653.48

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Solution

The fourth proportional to 5,428.52, 8,128.68 and 4,653.48 is: 6,968.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,428.52 : 8,128.68 = 4,653.48 : x
  2. Step 2: Convert to fraction form
    5,428.52/8,128.68 = 4,653.48/x
  3. Step 3: Cross multiply
    5,428.52x = 8,128.68 × 4,653.48
  4. Step 4: Simplify right side
    5,428.52x = 37,826,649.81
  5. Step 5: Solve for x
    x = 37,826,649.81/5,428.52
  6. Step 6: Final answer
    x = 6,968.13

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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.