Home / 9,979.20-14,974.20-4,136.40

Finding the Fourth Proportional to 9,979.20, 14,974.20 and 4,136.40

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Solution

The fourth proportional to 9,979.20, 14,974.20 and 4,136.40 is: 6,206.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,979.20 : 14,974.20 = 4,136.40 : x
  2. Step 2: Convert to fraction form
    9,979.20/14,974.20 = 4,136.40/x
  3. Step 3: Cross multiply
    9,979.20x = 14,974.20 × 4,136.40
  4. Step 4: Simplify right side
    9,979.20x = 61,939,280.88
  5. Step 5: Solve for x
    x = 61,939,280.88/9,979.20
  6. Step 6: Final answer
    x = 6,206.84

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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.