Home / 8,988.16-13,479.36-2,830.72

Finding the Fourth Proportional to 8,988.16, 13,479.36 and 2,830.72

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Solution

The fourth proportional to 8,988.16, 13,479.36 and 2,830.72 is: 4,245.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,988.16 : 13,479.36 = 2,830.72 : x
  2. Step 2: Convert to fraction form
    8,988.16/13,479.36 = 2,830.72/x
  3. Step 3: Cross multiply
    8,988.16x = 13,479.36 × 2,830.72
  4. Step 4: Simplify right side
    8,988.16x = 38,156,293.94
  5. Step 5: Solve for x
    x = 38,156,293.94/8,988.16
  6. Step 6: Final answer
    x = 4,245.17

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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.