Home / 8,128.83-12,214.85-7,603.95

Finding the Fourth Proportional to 8,128.83, 12,214.85 and 7,603.95

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Solution

The fourth proportional to 8,128.83, 12,214.85 and 7,603.95 is: 11,426.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.83 : 12,214.85 = 7,603.95 : x
  2. Step 2: Convert to fraction form
    8,128.83/12,214.85 = 7,603.95/x
  3. Step 3: Cross multiply
    8,128.83x = 12,214.85 × 7,603.95
  4. Step 4: Simplify right side
    8,128.83x = 92,881,070.64
  5. Step 5: Solve for x
    x = 92,881,070.64/8,128.83
  6. Step 6: Final answer
    x = 11,426.13

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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.