Home / 6,639.23-9,957.69-2,478.80

Finding the Fourth Proportional to 6,639.23, 9,957.69 and 2,478.80

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Solution

The fourth proportional to 6,639.23, 9,957.69 and 2,478.80 is: 3,717.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,639.23 : 9,957.69 = 2,478.80 : x
  2. Step 2: Convert to fraction form
    6,639.23/9,957.69 = 2,478.80/x
  3. Step 3: Cross multiply
    6,639.23x = 9,957.69 × 2,478.80
  4. Step 4: Simplify right side
    6,639.23x = 24,683,072.18
  5. Step 5: Solve for x
    x = 24,683,072.18/6,639.23
  6. Step 6: Final answer
    x = 3,717.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.