Home / 8,206.72-11,315.40-5,690.99

Finding the Fourth Proportional to 8,206.72, 11,315.40 and 5,690.99

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Solution

The fourth proportional to 8,206.72, 11,315.40 and 5,690.99 is: 7,846.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,206.72 : 11,315.40 = 5,690.99 : x
  2. Step 2: Convert to fraction form
    8,206.72/11,315.40 = 5,690.99/x
  3. Step 3: Cross multiply
    8,206.72x = 11,315.40 × 5,690.99
  4. Step 4: Simplify right side
    8,206.72x = 64,395,835.19
  5. Step 5: Solve for x
    x = 64,395,835.19/8,206.72
  6. Step 6: Final answer
    x = 7,846.72

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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.