Home / 6,420.50-8,860.18-3,587.92

Finding the Fourth Proportional to 6,420.50, 8,860.18 and 3,587.92

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Solution

The fourth proportional to 6,420.50, 8,860.18 and 3,587.92 is: 4,951.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,420.50 : 8,860.18 = 3,587.92 : x
  2. Step 2: Convert to fraction form
    6,420.50/8,860.18 = 3,587.92/x
  3. Step 3: Cross multiply
    6,420.50x = 8,860.18 × 3,587.92
  4. Step 4: Simplify right side
    6,420.50x = 31,789,617.03
  5. Step 5: Solve for x
    x = 31,789,617.03/6,420.50
  6. Step 6: Final answer
    x = 4,951.27

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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.