Home / 5,178.42-7,756.90-2,705.76

Finding the Fourth Proportional to 5,178.42, 7,756.90 and 2,705.76

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Solution

The fourth proportional to 5,178.42, 7,756.90 and 2,705.76 is: 4,053.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.42 : 7,756.90 = 2,705.76 : x
  2. Step 2: Convert to fraction form
    5,178.42/7,756.90 = 2,705.76/x
  3. Step 3: Cross multiply
    5,178.42x = 7,756.90 × 2,705.76
  4. Step 4: Simplify right side
    5,178.42x = 20,988,302.98
  5. Step 5: Solve for x
    x = 20,988,302.98/5,178.42
  6. Step 6: Final answer
    x = 4,053.03

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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.