Home / 6,145.10-9,215.85-2,857.40

Finding the Fourth Proportional to 6,145.10, 9,215.85 and 2,857.40

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Solution

The fourth proportional to 6,145.10, 9,215.85 and 2,857.40 is: 4,285.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,145.10 : 9,215.85 = 2,857.40 : x
  2. Step 2: Convert to fraction form
    6,145.10/9,215.85 = 2,857.40/x
  3. Step 3: Cross multiply
    6,145.10x = 9,215.85 × 2,857.40
  4. Step 4: Simplify right side
    6,145.10x = 26,333,369.79
  5. Step 5: Solve for x
    x = 26,333,369.79/6,145.10
  6. Step 6: Final answer
    x = 4,285.26

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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.