Home / 6,639.40-9,162.25-3,655.53

Finding the Fourth Proportional to 6,639.40, 9,162.25 and 3,655.53

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Solution

The fourth proportional to 6,639.40, 9,162.25 and 3,655.53 is: 5,044.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.40 : 9,162.25 = 3,655.53 : x
  2. Step 2: Convert to fraction form
    6,639.40/9,162.25 = 3,655.53/x
  3. Step 3: Cross multiply
    6,639.40x = 9,162.25 × 3,655.53
  4. Step 4: Simplify right side
    6,639.40x = 33,492,870.60
  5. Step 5: Solve for x
    x = 33,492,870.60/6,639.40
  6. Step 6: Final answer
    x = 5,044.56

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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.