Home / 6,243.12-8,612.64-4,381.20

Finding the Fourth Proportional to 6,243.12, 8,612.64 and 4,381.20

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Solution

The fourth proportional to 6,243.12, 8,612.64 and 4,381.20 is: 6,044.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,243.12 : 8,612.64 = 4,381.20 : x
  2. Step 2: Convert to fraction form
    6,243.12/8,612.64 = 4,381.20/x
  3. Step 3: Cross multiply
    6,243.12x = 8,612.64 × 4,381.20
  4. Step 4: Simplify right side
    6,243.12x = 37,733,698.37
  5. Step 5: Solve for x
    x = 37,733,698.37/6,243.12
  6. Step 6: Final answer
    x = 6,044.05

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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.