Home / 8,784.16-13,172.18-2,939.20

Finding the Fourth Proportional to 8,784.16, 13,172.18 and 2,939.20

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Solution

The fourth proportional to 8,784.16, 13,172.18 and 2,939.20 is: 4,407.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,784.16 : 13,172.18 = 2,939.20 : x
  2. Step 2: Convert to fraction form
    8,784.16/13,172.18 = 2,939.20/x
  3. Step 3: Cross multiply
    8,784.16x = 13,172.18 × 2,939.20
  4. Step 4: Simplify right side
    8,784.16x = 38,715,671.46
  5. Step 5: Solve for x
    x = 38,715,671.46/8,784.16
  6. Step 6: Final answer
    x = 4,407.44

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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.