Home / 8,255.45-11,394.18-5,603.72

Finding the Fourth Proportional to 8,255.45, 11,394.18 and 5,603.72

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Solution

The fourth proportional to 8,255.45, 11,394.18 and 5,603.72 is: 7,734.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,255.45 : 11,394.18 = 5,603.72 : x
  2. Step 2: Convert to fraction form
    8,255.45/11,394.18 = 5,603.72/x
  3. Step 3: Cross multiply
    8,255.45x = 11,394.18 × 5,603.72
  4. Step 4: Simplify right side
    8,255.45x = 63,849,737.38
  5. Step 5: Solve for x
    x = 63,849,737.38/8,255.45
  6. Step 6: Final answer
    x = 7,734.25

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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.