Home / 6,919.05-10,377.90-1,988.58

Finding the Fourth Proportional to 6,919.05, 10,377.90 and 1,988.58

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Solution

The fourth proportional to 6,919.05, 10,377.90 and 1,988.58 is: 2,982.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,919.05 : 10,377.90 = 1,988.58 : x
  2. Step 2: Convert to fraction form
    6,919.05/10,377.90 = 1,988.58/x
  3. Step 3: Cross multiply
    6,919.05x = 10,377.90 × 1,988.58
  4. Step 4: Simplify right side
    6,919.05x = 20,637,284.38
  5. Step 5: Solve for x
    x = 20,637,284.38/6,919.05
  6. Step 6: Final answer
    x = 2,982.68

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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.