Home / 4,158.78-6,239.06-1,385.34

Finding the Fourth Proportional to 4,158.78, 6,239.06 and 1,385.34

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Solution

The fourth proportional to 4,158.78, 6,239.06 and 1,385.34 is: 2,078.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,158.78 : 6,239.06 = 1,385.34 : x
  2. Step 2: Convert to fraction form
    4,158.78/6,239.06 = 1,385.34/x
  3. Step 3: Cross multiply
    4,158.78x = 6,239.06 × 1,385.34
  4. Step 4: Simplify right side
    4,158.78x = 8,643,219.38
  5. Step 5: Solve for x
    x = 8,643,219.38/4,158.78
  6. Step 6: Final answer
    x = 2,078.31

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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.