Home / 4,280.78-6,421.18-1,359.34

Finding the Fourth Proportional to 4,280.78, 6,421.18 and 1,359.34

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Solution

The fourth proportional to 4,280.78, 6,421.18 and 1,359.34 is: 2,039.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,280.78 : 6,421.18 = 1,359.34 : x
  2. Step 2: Convert to fraction form
    4,280.78/6,421.18 = 1,359.34/x
  3. Step 3: Cross multiply
    4,280.78x = 6,421.18 × 1,359.34
  4. Step 4: Simplify right side
    4,280.78x = 8,728,566.82
  5. Step 5: Solve for x
    x = 8,728,566.82/4,280.78
  6. Step 6: Final answer
    x = 2,039.01

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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.