Home / 8,986.68-12,400.56-5,209.92

Finding the Fourth Proportional to 8,986.68, 12,400.56 and 5,209.92

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Solution

The fourth proportional to 8,986.68, 12,400.56 and 5,209.92 is: 7,189.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,986.68 : 12,400.56 = 5,209.92 : x
  2. Step 2: Convert to fraction form
    8,986.68/12,400.56 = 5,209.92/x
  3. Step 3: Cross multiply
    8,986.68x = 12,400.56 × 5,209.92
  4. Step 4: Simplify right side
    8,986.68x = 64,605,925.56
  5. Step 5: Solve for x
    x = 64,605,925.56/8,986.68
  6. Step 6: Final answer
    x = 7,189.08

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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.