Home / 5,417.48-8,122.17-2,128.07

Finding the Fourth Proportional to 5,417.48, 8,122.17 and 2,128.07

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Solution

The fourth proportional to 5,417.48, 8,122.17 and 2,128.07 is: 3,190.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,417.48 : 8,122.17 = 2,128.07 : x
  2. Step 2: Convert to fraction form
    5,417.48/8,122.17 = 2,128.07/x
  3. Step 3: Cross multiply
    5,417.48x = 8,122.17 × 2,128.07
  4. Step 4: Simplify right side
    5,417.48x = 17,284,574.60
  5. Step 5: Solve for x
    x = 17,284,574.60/5,417.48
  6. Step 6: Final answer
    x = 3,190.52

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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.