Home / 9,639.04-13,297.08-6,489.76

Finding the Fourth Proportional to 9,639.04, 13,297.08 and 6,489.76

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Solution

The fourth proportional to 9,639.04, 13,297.08 and 6,489.76 is: 8,952.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,639.04 : 13,297.08 = 6,489.76 : x
  2. Step 2: Convert to fraction form
    9,639.04/13,297.08 = 6,489.76/x
  3. Step 3: Cross multiply
    9,639.04x = 13,297.08 × 6,489.76
  4. Step 4: Simplify right side
    9,639.04x = 86,294,857.90
  5. Step 5: Solve for x
    x = 86,294,857.90/9,639.04
  6. Step 6: Final answer
    x = 8,952.64

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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.