Home / 5,640.39-8,462.07-2,130.45

Finding the Fourth Proportional to 5,640.39, 8,462.07 and 2,130.45

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Solution

The fourth proportional to 5,640.39, 8,462.07 and 2,130.45 is: 3,196.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,640.39 : 8,462.07 = 2,130.45 : x
  2. Step 2: Convert to fraction form
    5,640.39/8,462.07 = 2,130.45/x
  3. Step 3: Cross multiply
    5,640.39x = 8,462.07 × 2,130.45
  4. Step 4: Simplify right side
    5,640.39x = 18,028,017.03
  5. Step 5: Solve for x
    x = 18,028,017.03/5,640.39
  6. Step 6: Final answer
    x = 3,196.24

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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.