Home / 6,719.84-10,078.40-4,219.91

Finding the Fourth Proportional to 6,719.84, 10,078.40 and 4,219.91

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Solution

The fourth proportional to 6,719.84, 10,078.40 and 4,219.91 is: 6,329.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,719.84 : 10,078.40 = 4,219.91 : x
  2. Step 2: Convert to fraction form
    6,719.84/10,078.40 = 4,219.91/x
  3. Step 3: Cross multiply
    6,719.84x = 10,078.40 × 4,219.91
  4. Step 4: Simplify right side
    6,719.84x = 42,529,890.55
  5. Step 5: Solve for x
    x = 42,529,890.55/6,719.84
  6. Step 6: Final answer
    x = 6,329.01

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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.