Home / 6,420.33-8,859.51-3,587.49

Finding the Fourth Proportional to 6,420.33, 8,859.51 and 3,587.49

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Solution

The fourth proportional to 6,420.33, 8,859.51 and 3,587.49 is: 4,950.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.33 : 8,859.51 = 3,587.49 : x
  2. Step 2: Convert to fraction form
    6,420.33/8,859.51 = 3,587.49/x
  3. Step 3: Cross multiply
    6,420.33x = 8,859.51 × 3,587.49
  4. Step 4: Simplify right side
    6,420.33x = 31,783,403.53
  5. Step 5: Solve for x
    x = 31,783,403.53/6,420.33
  6. Step 6: Final answer
    x = 4,950.43

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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.