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Finding the Fourth Proportional to 6,603.76, 9,110.64 and 4,247.20

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Solution

The fourth proportional to 6,603.76, 9,110.64 and 4,247.20 is: 5,859.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,603.76 : 9,110.64 = 4,247.20 : x
  2. Step 2: Convert to fraction form
    6,603.76/9,110.64 = 4,247.20/x
  3. Step 3: Cross multiply
    6,603.76x = 9,110.64 × 4,247.20
  4. Step 4: Simplify right side
    6,603.76x = 38,694,710.21
  5. Step 5: Solve for x
    x = 38,694,710.21/6,603.76
  6. Step 6: Final answer
    x = 5,859.50

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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.