Home / 2,385.78-3,570.87-2,158.44

Finding the Fourth Proportional to 2,385.78, 3,570.87 and 2,158.44

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Solution

The fourth proportional to 2,385.78, 3,570.87 and 2,158.44 is: 3,230.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,385.78 : 3,570.87 = 2,158.44 : x
  2. Step 2: Convert to fraction form
    2,385.78/3,570.87 = 2,158.44/x
  3. Step 3: Cross multiply
    2,385.78x = 3,570.87 × 2,158.44
  4. Step 4: Simplify right side
    2,385.78x = 7,707,508.64
  5. Step 5: Solve for x
    x = 7,707,508.64/2,385.78
  6. Step 6: Final answer
    x = 3,230.60

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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.