Home / 8,521.48-12,722.45-7,209.64

Finding the Fourth Proportional to 8,521.48, 12,722.45 and 7,209.64

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Solution

The fourth proportional to 8,521.48, 12,722.45 and 7,209.64 is: 10,763.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,521.48 : 12,722.45 = 7,209.64 : x
  2. Step 2: Convert to fraction form
    8,521.48/12,722.45 = 7,209.64/x
  3. Step 3: Cross multiply
    8,521.48x = 12,722.45 × 7,209.64
  4. Step 4: Simplify right side
    8,521.48x = 91,724,284.42
  5. Step 5: Solve for x
    x = 91,724,284.42/8,521.48
  6. Step 6: Final answer
    x = 10,763.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.