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Finding the Fourth Proportional to 6,989.98, 9,639.03 and 4,631.26

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Solution

The fourth proportional to 6,989.98, 9,639.03 and 4,631.26 is: 6,386.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,989.98 : 9,639.03 = 4,631.26 : x
  2. Step 2: Convert to fraction form
    6,989.98/9,639.03 = 4,631.26/x
  3. Step 3: Cross multiply
    6,989.98x = 9,639.03 × 4,631.26
  4. Step 4: Simplify right side
    6,989.98x = 44,640,854.08
  5. Step 5: Solve for x
    x = 44,640,854.08/6,989.98
  6. Step 6: Final answer
    x = 6,386.41

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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.