Home / 8,420.18-12,632.49-2,873.51

Finding the Fourth Proportional to 8,420.18, 12,632.49 and 2,873.51

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Solution

The fourth proportional to 8,420.18, 12,632.49 and 2,873.51 is: 4,311.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.18 : 12,632.49 = 2,873.51 : x
  2. Step 2: Convert to fraction form
    8,420.18/12,632.49 = 2,873.51/x
  3. Step 3: Cross multiply
    8,420.18x = 12,632.49 × 2,873.51
  4. Step 4: Simplify right side
    8,420.18x = 36,299,617.78
  5. Step 5: Solve for x
    x = 36,299,617.78/8,420.18
  6. Step 6: Final answer
    x = 4,311.03

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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.