Home / 8,986.24-12,400.47-5,209.11

Finding the Fourth Proportional to 8,986.24, 12,400.47 and 5,209.11

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Solution

The fourth proportional to 8,986.24, 12,400.47 and 5,209.11 is: 7,188.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,986.24 : 12,400.47 = 5,209.11 : x
  2. Step 2: Convert to fraction form
    8,986.24/12,400.47 = 5,209.11/x
  3. Step 3: Cross multiply
    8,986.24x = 12,400.47 × 5,209.11
  4. Step 4: Simplify right side
    8,986.24x = 64,595,412.28
  5. Step 5: Solve for x
    x = 64,595,412.28/8,986.24
  6. Step 6: Final answer
    x = 7,188.26

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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.