Home / 4,280.72-6,424-1,972.24

Finding the Fourth Proportional to 4,280.72, 6,424 and 1,972.24

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Solution

The fourth proportional to 4,280.72, 6,424 and 1,972.24 is: 2,959.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,280.72 : 6,424 = 1,972.24 : x
  2. Step 2: Convert to fraction form
    4,280.72/6,424 = 1,972.24/x
  3. Step 3: Cross multiply
    4,280.72x = 6,424 × 1,972.24
  4. Step 4: Simplify right side
    4,280.72x = 12,669,669.76
  5. Step 5: Solve for x
    x = 12,669,669.76/4,280.72
  6. Step 6: Final answer
    x = 2,959.71

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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.