Home / 7,678.35-11,503.61-3,521.84

Finding the Fourth Proportional to 7,678.35, 11,503.61 and 3,521.84

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Solution

The fourth proportional to 7,678.35, 11,503.61 and 3,521.84 is: 5,276.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,678.35 : 11,503.61 = 3,521.84 : x
  2. Step 2: Convert to fraction form
    7,678.35/11,503.61 = 3,521.84/x
  3. Step 3: Cross multiply
    7,678.35x = 11,503.61 × 3,521.84
  4. Step 4: Simplify right side
    7,678.35x = 40,513,873.84
  5. Step 5: Solve for x
    x = 40,513,873.84/7,678.35
  6. Step 6: Final answer
    x = 5,276.38

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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.