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Finding the Fourth Proportional to 6,603.98, 9,113.65 and 3,619.80

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Solution

The fourth proportional to 6,603.98, 9,113.65 and 3,619.80 is: 4,995.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,603.98 : 9,113.65 = 3,619.80 : x
  2. Step 2: Convert to fraction form
    6,603.98/9,113.65 = 3,619.80/x
  3. Step 3: Cross multiply
    6,603.98x = 9,113.65 × 3,619.80
  4. Step 4: Simplify right side
    6,603.98x = 32,989,581.22
  5. Step 5: Solve for x
    x = 32,989,581.22/6,603.98
  6. Step 6: Final answer
    x = 4,995.41

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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.