Home / 7,986.30-11,975.40-4,700.40

Finding the Fourth Proportional to 7,986.30, 11,975.40 and 4,700.40

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Solution

The fourth proportional to 7,986.30, 11,975.40 and 4,700.40 is: 7,048.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,986.30 : 11,975.40 = 4,700.40 : x
  2. Step 2: Convert to fraction form
    7,986.30/11,975.40 = 4,700.40/x
  3. Step 3: Cross multiply
    7,986.30x = 11,975.40 × 4,700.40
  4. Step 4: Simplify right side
    7,986.30x = 56,289,170.16
  5. Step 5: Solve for x
    x = 56,289,170.16/7,986.30
  6. Step 6: Final answer
    x = 7,048.22

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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.