Home / 7,113.42-10,670.70-1,919.22

Finding the Fourth Proportional to 7,113.42, 10,670.70 and 1,919.22

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Solution

The fourth proportional to 7,113.42, 10,670.70 and 1,919.22 is: 2,878.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,113.42 : 10,670.70 = 1,919.22 : x
  2. Step 2: Convert to fraction form
    7,113.42/10,670.70 = 1,919.22/x
  3. Step 3: Cross multiply
    7,113.42x = 10,670.70 × 1,919.22
  4. Step 4: Simplify right side
    7,113.42x = 20,479,420.85
  5. Step 5: Solve for x
    x = 20,479,420.85/7,113.42
  6. Step 6: Final answer
    x = 2,878.98

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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.